Pall bearers for brothers Severiano Buck and Bace Wallace, who both died from complications of the coronavirus disease (COVID-19), carry a casket to their family plot for burial on the Sanostee chapter of the Navajo nation in Sanostee, New Mexico, U.S., December 16, 2021. REUTERS/Shannon Stapleton 

Lowell Jackson, a funeral worker, helps dig the gravesites of brothers Severiano Buck and Bace Wallace, who both died from complications of the coronavirus disease (COVID-19), before their burial at the family plot on the Sanostee chapter of the Navajo nation in Sanostee, New Mexico, U.S., December 16, 2021. REUTERS/Shannon Stapleton 

Lowell Jackson, a funeral worker, helps dig the gravesite of brothers Severiano Buck and Bace Wallace, who both died from complications of the coronavirus disease (COVID-19), before their burial at the family plot on the Sanostee chapter of the Navajo nation in Sanostee, New Mexico, U.S., December 16, 2021. REUTERS/Shannon Stapleton 

Nathaniel Buck sprinkles dirt on the gravesites of his brothers Severiano Buck and Bace Wallace, who both died from complications of the coronavirus disease (COVID-19), after their burial at the family plot on the Sanostee chapter of the Navajo nation in Sanostee, New Mexico, U.S., December 16, 2021. REUTERS/Shannon Stapleton 

A woman and a child walk past the gravesites of Severiano Buck and Bace Wallace, who both died from complications of the coronavirus disease (COVID-19), after their burial at the family plot on the Sanostee chapter of the Navajo nation in Sanostee, New Mexico, U.S., December 16, 2021. REUTERS/Shannon Stapleton 

Family and friends of brothers Severiano Buck and Bace Wallace, who both died from complications of the coronavirus disease (COVID-19), stand by graveside at the family plot on the Sanostee chapter of the Navajo nation in Sanostee, New Mexico, U.S., December 16, 2021. REUTERS/Shannon Stapleton 

Family and friends of brothers Severiano Buck and Bace Wallace, who both died from complications of the coronavirus disease (COVID-19), stand by graveside at the family plot on the Sanostee chapter of the Navajo nation in Sanostee, New Mexico, U.S., December 16, 2021. REUTERS/Shannon Stapleton 

Family and friends of brothers Severiano Buck and Bace Wallace, who both died from complications of the coronavirus disease (COVID-19), hold hands by graveside at the family plot on the Sanostee chapter of the Navajo nation in Sanostee, New Mexico, U.S., December 16, 2021. REUTERS/Shannon Stapleton 

Wallace Buck stands alone waiting for the burial of his sons Severiano Buck and Bace Wallace, who both died from complications of the coronavirus disease (COVID-19), at the family plot on the Sanostee chapter of the Navajo nation in Sanostee, New Mexico, U.S., December 16, 2021. REUTERS/Shannon Stapleton 

Wallace Buck sprinkles dirt on the gravesites of his sons Severiano Buck and Bace Wallace, who both died from complications of the coronavirus disease (COVID-19), after their burial at the family plot on the Sanostee chapter of the Navajo nation in Sanostee, New Mexico, U.S., December 16, 2021. REUTERS/Shannon Stapleton 

Wallace Buck sprinkles dirt on the gravesites of his sons Severiano Buck and Bace Wallace, who both died from complications of the coronavirus disease (COVID-19), after their burial at the family plot on the Sanostee chapter of the Navajo nation in Sanostee, New Mexico, U.S., December 16, 2021. REUTERS/Shannon Stapleton 

A woman wearing a protective face mask, amid the coronavirus disease (COVID-19) pandemic, walks by the entrance to the Teec Nos Pos Trading Post on Navajo Nation reservation land in Teec Nos Pos, Arizona, U.S., December 12, 2021. REUTERS/Shannon Stapleton 

A tattered U.S. flag waves from a gravesite at the Shiprock Veterans Cemetery on Navajo Nation federal trust land in Shiprock, New Mexico, U.S., December 12, 2021. REUTERS/Shannon Stapleton 

Bosephus Joe, 34, wearing a protective face mask, amid the coronavirus disease (COVID-19) pandemic, smokes a cigarette outside Teec Nos Pos Trading Post on Navajo Nation reservation land in Teec Nos Pos, Arizona, U.S., December 12, 2021. REUTERS/Shannon Stapleton 

Nathan Blackwater wearing a protective face mask holds his daughter Nylah after receiving her first dose of the Pfizer-BioNTech coronavirus disease (COVID-19) vaccine from a member of the Northern Navajo Medical Center at a vaccination site in Shiprock, New Mexico, U.S., December 12, 2021. REUTERS/Shannon Stapleton 

Family medicine doctor Chris Percy of the Northern Navajo Medical Center applies a dose of the Pfizer-BioNTech coronavirus disease (COVID-19) vaccine to Nathan Blackwater, 37, at a vaccination site in Shiprock, New Mexico, U.S., December 12, 2021. REUTERS/Shannon Stapleton 

Nathan Blackwater wearing a protective face mask holds his daughter Nylah after receiving her first dose of the Pfizer-BioNTech coronavirus disease (COVID-19) vaccine from family medicine doctor Chris Percy, of the Northern Navajo Medical Center, at a vaccination site in Shiprock, New Mexico, U.S., December 12, 2021. REUTERS/Shannon Stapleton 

Family medicine doctor Chris Percy of the Northern Navajo Medical Center applies a dose of the Pfizer-BioNTech coronavirus disease (COVID-19) vaccine to Valerina Cheer, 33, at a vaccination site in Shiprock, New Mexico, U.S., December 12, 2021. REUTERS/Shannon Stapleton 

Darin Jenny, 4, wearing a protective face mask, shops with his father Skylar Wolf, amid the coronavirus disease (COVID-19) pandemic, at a flea market on Navajo reservation land on San Juan County in Shiprock, New Mexico, U.S., December 12, 2021. REUTERS/Shannon Stapleton 

People wearing protective face masks shop, amid the coronavirus disease (COVID-19) pandemic, at a flea market on Navajo reservation land on San Juan County in Shiprock, New Mexico, U.S., December 12, 2021. REUTERS/Shannon Stapleton 

People wearing protective face masks shop, amid the coronavirus disease (COVID-19) pandemic, at a flea market on Navajo reservation land on San Juan County in Shiprock, New Mexico, U.S., December 12, 2021. REUTERS/Shannon Stapleton 

A tattered U.S. flag flutters from a gravesite at the Naschitti Cemetery on Navajo Nation federal trust land outside Gallup, New Mexico, U.S., December 7, 2021. REUTERS/Shannon Stapleton 

Graffiti is seen on the side of a burned building, amid the coronavirus disease (COVID-19) pandemic, on Navajo Nation federal trust land in Shiprock, New Mexico, U.S., December 7, 2021. REUTERS/Shannon Stapleton 

A U.S. flag flutters above the gravesite of a U.S. Marines veteran at the Naschitti Cemetery on Navajo Nation federal trust land outside Gallup, New Mexico, U.S., December 7, 2021. REUTERS/Shannon Stapleton TPX IMAGES OF THE DAY 

Billboards are seen at the entrance to Tohatchi, a census-designated place in McKinley County, New Mexico, amid the coronavirus disease (COVID-19) pandemic, on Navajo Nation federal trust land outside Gallup, New Mexico, U.S., December 7, 2021. REUTERS/Shannon Stapleton 

Katera Martinez covers the eyes of her son Carter, 8, as he gets a dose of the Pfizer coronavirus disease (COVID-19) vaccine from members of the Utah Navajo Health System (UNHS), at a vaccination site for children ages 5-11 in the San Juan County of Aneth, Utah, U.S., December 7, 2021. REUTERS/Shannon Stapleton REFILE - CORRECTING CAPTION INFORMATION 

A member of the Utah Navajo Health System (UNHS) gathers information from a parent for getting a dose of the Pfizer coronavirus disease (COVID-19) vaccine at a vaccination site for children ages 5-11 in the San Juan County of Aneth, Utah, U.S., December 7, 2021. REUTERS/Shannon Stapleton REFILE - CORRECTING CAPTION INFORMATION 

Heidi Dishface, 8, is comforted while getting a dose of the Pfizer coronavirus disease (COVID-19) vaccine from members of the Utah Navajo Health System (UNHS), while her sister Hailee Rentz, 9, waits for her turn, at a vaccination site for children ages 5-11 in the San Juan County of Aneth, Utah, U.S., December 7, 2021. REUTERS/Shannon Stapleton REFILE - CORRECTING CAPTION INFORMATION 

Heidi Dishface, 8, is comforted while getting a dose of the Pfizer coronavirus disease (COVID-19) vaccine from members of the Utah Navajo Health System (UNHS), at a vaccination site for children ages 5-11 in the San Juan County of Aneth, Utah, U.S., December 7, 2021. REUTERS/Shannon Stapleton REFILE - CORRECTING CAPTION INFORMATION 

Norman Patrick Brown, a member of Navajo Nation, gestures to commemorate Indigenous Peoples' Day in Albuquerque, New Mexico, U.S., October 11, 2021. REUTERS/ Mostafa Bassim 

Norman Patrick Brown, a member of Navajo Nation, gestures to commemorate Indigenous Peoples' Day in Albuquerque, New Mexico, U.S., October 11, 2021. REUTERS/Mostafa Bassim 

Navajo Nation President Jonathan Nez arrives for an event with first lady Jill Biden, Phoenix Mayor Kate Gallego, and Doug Emhoff, husband of Vice President Kamala Harris at Isaac Middle School in Phoenix, U.S., June 30, 2021. Carolyn Kaster/Pool via REUTERS 

Michelle Whitehorse from the Navajo Nation paints her face before participating in an Indian relay race over Memorial Day weekend at the Osage County Fairgrounds in Pawhuska, Oklahoma, U.S. May 31, 2021. REUTERS/Stephanie Keith 

Michelle Whitehorse from the Navajo Nation paints her horse before participating in an Indian relay race over Memorial Day weekend at the Osage County Fairgrounds in Pawhuska, Oklahoma, U.S. May 31, 2021. REUTERS/Stephanie Keith 

Navajo Nation Council Member Eugenia Charles Newton helps U.S. first lady Jill Biden cover up with a blanket during a welcome ceremony at the Window Rock Navajo Tribal Park & Veterans Memorial in Window Rock, Arizona, U.S., April 22, 2021. Mandel Ngan/Pool via REUTERS TPX IMAGES OF THE DAY 

U.S. first lady Jill Biden speaks during a live radio address to the Navajo Nation at the Window Rock Navajo Tribal Park & Veterans Memorial in Window Rock, Arizona, U.S., April 22, 2021. Mandel Ngan/Pool via REUTERS 

U.S. first lady Jill Biden speaks during a live radio address to the Navajo Nation at the Window Rock Navajo Tribal Park & Veterans Memorial in Window Rock, Arizona, U.S., April 22, 2021. Mandel Ngan/Pool via REUTERS 

U.S. first lady Jill Biden speaks during a live radio address to the Navajo Nation at the Window Rock Navajo Tribal Park & Veterans Memorial in Window Rock, Arizona, U.S., April 22, 2021. Mandel Ngan/Pool via REUTERS 

U.S. first lady Jill Biden speaks during a live radio address to the Navajo Nation at the Window Rock Navajo Tribal Park & Veterans Memorial in Window Rock, Arizona, U.S., April 22, 2021. Mandel Ngan/Pool via REUTERS 

U.S. first lady Jill Biden speaks during a live radio address at the Window Rock Navajo Tribal Park & Veterans Memorial in Window Rock, Arizona, U.S., April 22, 2021. Mandel Ngan/Pool via REUTERS 

U.S. first lady Jill Biden speaks during a live radio address at the Window Rock Navajo Tribal Park & Veterans Memorial in Window Rock, Arizona, U.S., April 22, 2021. Mandel Ngan/Pool via REUTERS 

U.S. first lady Jill Biden speaks during a live radio address at the Window Rock Navajo Tribal Park & Veterans Memorial in Window Rock, Arizona, U.S., April 22, 2021. Mandel Ngan/Pool via REUTERS 

U.S. first lady Jill Biden speaks during a live radio address at the Window Rock Navajo Tribal Park & Veterans Memorial in Window Rock, Arizona, U.S., April 22, 2021. Mandel Ngan/Pool via REUTERS 

Navajo Nation Council Member Eugenia Charles Newton helps U.S. first lady Jill Biden cover up with a blanket, during a live radio address with Navajo Nation President Jonathan Nez and his wife Phefelia Nez at the Window Rock Navajo Tribal Park & Veterans Memorial in Window Rock, Arizona, U.S., April 22, 2021. Mandel Ngan/Pool via REUTERS 

Navajo Nation Council Member Eugenia Charles Newton helps U.S. first lady Jill Biden cover up with a blanket, during a live radio address with Navajo Nation President Jonathan Nez and his wife Phefelia Nez at the Window Rock Navajo Tribal Park & Veterans Memorial in Window Rock, Arizona, U.S., April 22, 2021. Mandel Ngan/Pool via REUTERS 

U.S. first lady Jill Biden, wrapped in a blanket against the chill wind, listen to a live radio address with Navajo Nation President Jonathan Nez and his wife Phefelia Nez in the Window Rock Navajo Tribal Park & Veterans Memorial in Window Rock, Arizona, U.S., April 22, 2021. Mandel Ngan/Pool via REUTERS 

U.S. first lady Jill Biden, wrapped in a blanket against the chill wind, listen to a live radio address with Navajo Nation President Jonathan Nez and his wife Phefelia Nez in the Window Rock Navajo Tribal Park & Veterans Memorial in Window Rock, Arizona, U.S., April 22, 2021. Mandel Ngan/Pool via REUTERS 

U.S. first lady Jill Biden, wrapped in a blanket against the chill wind, listens as Navajo Nation President Jonathan Nez (not pictured) speaks during a live radio address at the Window Rock Navajo Tribal Park & Veterans Memorial in Window Rock, Arizona, U.S., April 22, 2021. Mandel Ngan/Pool via REUTERS 

U.S. first lady Jill Biden, wrapped in a blanket against the chill wind, listens as Navajo Nation President Jonathan Nez (not pictured) speaks during a live radio address at the Window Rock Navajo Tribal Park & Veterans Memorial in Window Rock, Arizona, U.S., April 22, 2021. Mandel Ngan/Pool via REUTERS TPX IMAGES OF THE DAY 

Navajo Nation President Jonathan Nez speaks during a live radio address with U.S. first lady Jill Biden in attendance, at the Window Rock Navajo Tribal Park & Veterans Memorial in Window Rock, Arizona, U.S., April 22, 2021. Mandel Ngan/Pool via REUTERS 

U.S. first lady Jill Biden listens as Navajo Nation President Jonathan Nez (not pictured) speaks during a live radio address at the Window Rock Navajo Tribal Park & Veterans Memorial in Window Rock, Arizona, U.S., April 22, 2021. Mandel Ngan/Pool via REUTERS 

Navajo Nation President Jonathan Nez speaks during a live radio address with U.S. first lady Jill Biden in attendance, in Window Rock, Arizona, U.S., April 22, 2021. Mandel Ngan/Pool via REUTERS 

U.S. first lady Jill Biden speaks accompanied by Phefelia Nez, the wife of Navajo Nation President Jonathan Nez, as they greet Navajo women in Window Rock, Arizona, U.S., April 22, 2021. Mandel Ngan/Pool via REUTERS 

U.S. first lady Jill Biden chats with Navajo Nation President Jonathan Nez and his wife Phefelia Nez, during a visit to the Navajo Nation, in Window Rock, Arizona, U.S., April 22, 2021. Mandel Ngan/Pool via REUTERS 

U.S. first lady Jill Biden accompanied by Phefelia Nez, the wife of Navajo Nation President Jonathan Nez, greet Navajo women in Window Rock, Arizona, U.S., April 22, 2021. Mandel Ngan/Pool via REUTERS 

A tribal police officer stands guard over a hill overlooking the Navajo Nation museum where U.S. first lady Jill Biden is visiting in Window Rock, Arizona in the Navajo Nation, U.S., April 22, 2021. Mandel Ngan/Pool via REUTERS 

U.S. first lady Jill Biden poses for a photo with Navajo Nation President Jonathan Nez, his wife Phefelia Nez, Vice President of the Navajo Nation Myron Lizer and his wife Dottie Lizer, upon arrival in Window Rock, Arizona in the Navajo Nation, U.S., April 22, 2021. Mandel Ngan/Pool via REUTERS 

U.S. first lady Jill Biden gestures towards Phefelia Nez, the wife of Navajo Nation President Jonathan Nez, as they greet Navajo women in Window Rock, Arizona, U.S., April 22, 2021. Mandel Ngan/Pool via REUTERS 

U.S. first lady Jill Biden speaks accompanied by Phefelia Nez, the wife of Navajo Nation President Jonathan Nez, as they greet Navajo women in Window Rock, Arizona, U.S., April 22, 2021. Mandel Ngan/Pool via REUTERS 

U.S. first lady Jill Biden and Phefelia Nez, the wife of Navajo Nation President Jonathan Nez, greet Navajo women in Window Rock, Arizona, U.S., April 22, 2021. Mandel Ngan/Pool via REUTERS