United Parcel Service and the Teamsters hold a rally before before the beginning of the largest U.S. private sector labor contract talks covering more than 330,000 U.S. drivers, package handlers and loaders at the global delivery firm, in Orange, California, U.S. April 15, 2023. REUTERS/Aude Guerrucci 

United Parcel Service and the Teamsters hold a rally before before the beginning of the largest U.S. private sector labor contract talks covering more than 330,000 U.S. drivers, package handlers and loaders at the global delivery firm, in Orange, California, U.S. April 15, 2023. REUTERS/Aude Guerrucci 

United Parcel Service and the Teamsters hold a rally before before the beginning of the largest U.S. private sector labor contract talks covering more than 330,000 U.S. drivers, package handlers and loaders at the global delivery firm, in Orange, California, U.S. April 15, 2023. REUTERS/Aude Guerrucci 

United Parcel Service and the Teamsters hold a rally before before the beginning of the largest U.S. private sector labor contract talks covering more than 330,000 U.S. drivers, package handlers and loaders at the global delivery firm, in Orange, California, U.S. April 15, 2023. REUTERS/Aude Guerrucci 

United Parcel Service and the Teamsters hold a rally before before the beginning of the largest U.S. private sector labor contract talks covering more than 330,000 U.S. drivers, package handlers and loaders at the global delivery firm, in Orange, California, U.S. April 15, 2023. REUTERS/Aude Guerrucci 

United Parcel Service and the Teamsters hold a rally before before the beginning of the largest U.S. private sector labor contract talks covering more than 330,000 U.S. drivers, package handlers and loaders at the global delivery firm, in Orange, California, U.S. April 15, 2023. REUTERS/Aude Guerrucci 

Reverend Raphael Warnock, Democratic Senator for Georgia, speaks during a "Get Out the Vote" midterm runoff election rally and Teamsters worksite visit at a UPS facility in Atlanta, Georgia, U.S., December 5, 2022. REUTERS/Cheney Orr 

Reverend Raphael Warnock, Democratic Senator for Georgia, speaks during a "Get Out the Vote" midterm runoff election rally and Teamsters worksite visit at a UPS facility in Atlanta, Georgia, U.S., December 5, 2022. REUTERS/Cheney Orr 

A supporter listens as Reverend Raphael Warnock, Democratic Senator for Georgia, speaks during a "Get Out the Vote" midterm runoff election rally and Teamsters worksite visit at a UPS facility in Atlanta, Georgia, U.S., December 5, 2022. REUTERS/Cheney Orr 

Reverend Raphael Warnock, Democratic Senator for Georgia, speaks during a "Get Out the Vote" midterm runoff election rally and Teamsters worksite visit at a UPS facility in Atlanta, Georgia, U.S., December 5, 2022. REUTERS/Cheney Orr 

Reverend Raphael Warnock, Democratic Senator for Georgia, speaks during a "Get Out the Vote" midterm runoff election rally and Teamsters worksite visit at a UPS facility in Atlanta, Georgia, U.S., December 5, 2022. REUTERS/Cheney Orr 

Reverend Raphael Warnock, Democratic Senator for Georgia, takes a photo with a supporter during a "Get Out the Vote" midterm runoff election rally and Teamsters worksite visit at a UPS facility in Atlanta, Georgia, U.S., December 5, 2022. REUTERS/Cheney Orr 

Supporters wait for the arrival of Reverend Raphael Warnock, Democratic Senator for Georgia, during a "Get Out the Vote" midterm runoff election rally and Teamsters worksite visit at a UPS facility in Atlanta, Georgia, U.S., December 5, 2022. REUTERS/Cheney Orr 

A supporter holds a sign during a "Get Out the Vote" midterm runoff election rally and Teamsters worksite visit for Reverend Raphael Warnock, Democratic Senator for Georgia, at a UPS facility in Atlanta, Georgia, U.S., December 5, 2022. REUTERS/Cheney Orr 

Reverend Raphael Warnock and Jon Ossoff, Democratic Senators for Georgia, embrace during a "Get Out the Vote" midterm runoff election rally and Teamsters worksite visit at a UPS facility in Atlanta, Georgia, U.S., December 5, 2022. REUTERS/Cheney Orr 

Reverend Raphael Warnock, Democratic Senator for Georgia, looks on during a "Get Out the Vote" midterm runoff election rally and Teamsters worksite visit at a UPS facility in Atlanta, Georgia, U.S., December 5, 2022. REUTERS/Cheney Orr 

Reverend Raphael Warnock, Democratic Senator for Georgia, speaks to supporters during a "Get Out the Vote" midterm runoff election rally and Teamsters worksite visit at a UPS facility in Atlanta, Georgia, U.S., December 5, 2022. REUTERS/Cheney Orr 

Reverend Raphael Warnock, Democratic Senator for Georgia, watches as fellow Senator, Jon Ossoff, greets supporters during a "Get Out the Vote" midterm runoff election rally and Teamsters worksite visit at a UPS facility in Atlanta, Georgia, U.S., December 5, 2022. REUTERS/Cheney Orr 

Reverend Raphael Warnock, Democratic Senator for Georgia, greets supporters during a "Get Out the Vote" midterm runoff election rally and Teamsters worksite visit at a UPS facility in Atlanta, Georgia, U.S., December 5, 2022. REUTERS/Cheney Orr 

Sean O'Brien, General President of the International Brotherhood of Teamsters, testifies before the U.S. Senate Budget Committee during a hearing on Amazon's labor practices on Capitol Hill in Washington, U.S., May 5, 2022. REUTERS/Sarah Silbiger 

Sean O'Brien, General President of the International Brotherhood of Teamsters, testifies before the U.S. Senate Budget Committee during a hearing on Amazon's labor practices on Capitol Hill in Washington, U.S., May 5, 2022. REUTERS/Sarah Silbiger 

Teamsters union picket signs are stacked outside Canadian Pacific Railway's (CP Rail) Toronto Yard after the company halted operations and locked out employees over a labor dispute, in Scarborough, Ontario, Canada March 20, 2022. REUTERS/Chris Helgren 

Teamsters union workers picket outside Canadian Pacific Railway's (CP Rail) Toronto Yard after the company halted operations and locked out employees over a labor dispute , in Scarborough, Ontario, Canada March 20, 2022. REUTERS/Chris Helgren 

Teamsters union workers picket outside Canadian Pacific Railway's (CP Rail) Toronto Yard after the company halted operations and locked out employees over a labor dispute , in Scarborough, Ontario, Canada March 20, 2022. REUTERS/Chris Helgren 

The One World Trade Center tower in Manhattan is seen from a mound on an area of a former landfill adjacent to the Pulaski Skyway bridge where reports that an FBI investigation has been conducted as to the location being the possible burial site of former Teamsters boss Jimmy Hoffa who disappeared in 1975, in Jersey City, New Jersey, U.S., November 22, 2021. REUTERS/Mike Segar 

An area of a former landfill is pictured beneath the Pulaski Skyway bridge where reports that an FBI investigation has been conducted as to the location being the possible burial site of former Teamsters boss Jimmy Hoffa who disappeared in 1975, in Jersey City, New Jersey, U.S., November 22, 2021. REUTERS/Mike Segar 

Canada Geese fly beneath the Pulaski Skyway bridge on the site of a former landfill where reports that an FBI investigation has been conducted as to the location being the possible burial site of former Teamsters boss Jimmy Hoffa who disappeared in 1975, in Jersey City, New Jersey, U.S., November 22, 2021. REUTERS/Mike Segar 

Trash dumpsters are pictured under the Pulaski Skyway bridge on an area of the site of a former landfill where reports that an FBI investigation has been conducted as to the location being the possible burial site of former Teamsters boss Jimmy Hoffa who disappeared in 1975, in Jersey City, New Jersey, U.S., November 22, 2021. REUTERS/Mike Segar 

An airplane flies over a closed PSE&G power plant pictured from an area of a former landfill beneath the Pulaski Skyway bridge, where reports that an FBI investigation has been conducted as to the location being the possible burial site of former Teamsters boss Jimmy Hoffa who disappeared in 1975, in Jersey City, New Jersey, U.S., November 22, 2021. REUTERS/Mike Segar 

A decaying handbag is pictured on the site of a former landfill beneath the Pulaski Skyway bridge where reports that an FBI investigation has been conducted as to the location being the possible burial site of former Teamsters boss Jimmy Hoffa who disappeared in 1975, in Jersey City, New Jersey, U.S., November 22, 2021. REUTERS/Mike Segar 

A closed PSE&G power plant is pictured from an area of a former landfill beneath the Pulaski Skyway bridge where reports that an FBI investigation has been conducted as to the location being the possible burial site of former Teamsters boss Jimmy Hoffa who disappeared in 1975, in Jersey City, New Jersey, U.S., November 22, 2021. REUTERS/Mike Segar 

A closed PSE&G power plant is seen behind an area of a former landfill beneath the Pulaski Skyway bridge where reports that an FBI investigation has been conducted as to the location being the possible burial site of former Teamsters boss Jimmy Hoffa who disappeared in 1975, in Jersey City, New Jersey, U.S., November 22, 2021. REUTERS/Mike Segar 

Canada Geese walk beneath the Pulaski Skyway bridge on the site of a former landfill where reports that an FBI investigation has been conducted as to the location being the possible burial site of former Teamsters boss Jimmy Hoffa who disappeared in 1975, in Jersey City, New Jersey, U.S., November 22, 2021. REUTERS/Mike Segar 

Trash dumpsters are pictured under the Pulaski Skyway bridge on the site of a former landfill where reports that an FBI investigation has been conducted as to the location being the possible burial site of former Teamsters boss Jimmy Hoffa who disappeared in 1975, in Jersey City, New Jersey, U.S., November 22, 2021. REUTERS/Mike Segar 

Trash dumpsters are pictured under the Pulaski Skyway bridge on the site of a former landfill where reports that an FBI investigation has been conducted as to the location being the possible burial site of former Teamsters boss Jimmy Hoffa who disappeared in 1975, in Jersey City, New Jersey, U.S., November 22, 2021. REUTERS/Mike Segar 

Trash dumpsters are pictured under the Pulaski Skyway bridge on the site of a former landfill where reports that an FBI investigation has been conducted as to the location being the possible burial site of former Teamsters boss Jimmy Hoffa who disappeared in 1975, in Jersey City, New Jersey, U.S., November 22, 2021. REUTERS/Mike Segar 

Trash dumpsters are pictured under the Pulaski Skyway bridge on the site of a former landfill where reports that an FBI investigation has been conducted as to the location being the possible burial site of former Teamsters boss Jimmy Hoffa who disappeared in 1975, in Jersey City, New Jersey, U.S., November 22, 2021. REUTERS/Mike Segar 

A person in a jacket of the International Brotherhood of Teamsters labor union attends a May Day rally for media workers held by The NewsGuild of New York on International Workers' Day in Manhattan, New York City, New York, U.S., May 1, 2021. REUTERS/Andrew Kelly 

A person wearing a patch of the International Brotherhood of Teamsters labor union attends a May Day rally for media workers held by The NewsGuild of New York on International Workers' Day in Manhattan, New York City, New York, U.S., May 1, 2021. REUTERS/Andrew Kelly 

A person wearing a patch of the International Brotherhood of Teamsters labor union attends a May Day rally for media workers held by The NewsGuild of New York on International Workers' Day in Manhattan, New York City, New York, U.S., May 1, 2021. REUTERS/Andrew Kelly 

U.S. Transportation Secretary Pete Buttigieg participates in a roundtable discussion at Teamsters Union Hall in Raleigh, NC, U.S., April 30, 2021. Gerry Broome/Pool via REUTERS 

U.S. Transportation Secretary Pete Buttigieg listens during a roundtable discussion at Teamsters Union Hall in Raleigh, NC, U.S., April 30, 2021. Gerry Broome/Pool via REUTERS 

Doug Emhoff, left, husband of Vice President Kamala Harris, and U.S. Transportation Secretary Pete Buttigieg, participate in a roundtable discussion at Teamsters Union Hall in Raleigh, NC, U.S., April 30, 2021. Gerry Broome/Pool via REUTERS 

U.S. Transportation Secretary Pete Buttigieg participates in a roundtable discussion at Teamsters Union Hall in Raleigh, NC, U.S., April 30, 2021. Gerry Broome/Pool via REUTERS 

Doug Emhoff, husband of Vice President Kamala Harris, and U.S. Transportation Secretary Pete Buttigieg, participate in a roundtable discussion at Teamsters Union Hall in Raleigh, NC, U.S., April 30, 2021. Gerry Broome/Pool via REUTERS 

Doug Emhoff, husband of Vice President Kamala Harris, participates with U.S. Transportation Secretary Pete Buttigieg, not shown, in a roundtable discussion at Teamsters Union Hall in Raleigh, NC, U.S., April 30, 2021. Gerry Broome/Pool via REUTERS 

Doug Emhoff, husband of Vice President Kamala Harris, and U.S. Transportation Secretary Pete Buttigieg, participate in a roundtable discussion at Teamsters Union Hall in Raleigh, NC, U.S., April 30, 2021. Gerry Broome/Pool via REUTERS 

Teamsters Local 104 Principal Officer Karla Schumann poses for a photo at home after two weeks of quarantine in Phoenix, Arizona, U.S., December 28, 2020. Picture taken December 28, 2020. REUTERS/Caitlin O'Hara 

Business Representative for Teamsters Local 104 Carlos Toledo poses for a photo in Tucson, Arizona, U.S., December 9, 2020. Picture taken December 9, 2020. REUTERS/Caitlin O'Hara 

From left, Business Representative for Teamsters Local 104 Carlos Toledo and Teamsters shop stewards and UPS workers Michael Sanchez and Nick Quijada pose for a photo in Tucson, Arizona, U.S., December 9, 2020. Picture taken December 9, 2020. REUTERS/Caitlin O'Hara 

Teamsters Local 104 Principal Officer Karla Schumann poses for a photo at home after two weeks of quarantine in Phoenix, Arizona, U.S., December 28, 2020. Picture taken December 28, 2020. REUTERS/Caitlin O'Hara 

Teamsters Local 104 Principal Officer Karla Schumann poses for a photo at home after two weeks of quarantine in Phoenix, Arizona, U.S., December 28, 2020. Picture taken December 28, 2020. REUTERS/Caitlin O'Hara 

Masks available to those who enter are seen through the window of the Teamsters Local 104 office in Tucson, Arizona, U.S., December 9, 2020. Picture taken December 9, 2020. REUTERS/Caitlin O'Hara 

Business Representative for Teamsters Local 104 Carlos Toledo poses for a photo in Tucson, Arizona, U.S., December 9, 2020. Picture taken December 9, 2020. REUTERS/Caitlin O'Hara 

A strike sign is seen in the window of the Teamsters Local 104 office in Tucson, Arizona, U.S., December 9, 2020. Picture taken December 9, 2020. REUTERS/Caitlin O'Hara 

The logo of the International Brotherhood of Teamsters labor union is seen on the outside of their headquarters in Washington, D.C., U.S., August 30, 2020. REUTERS/Andrew Kelly 

The logo of the International Brotherhood of Teamsters labor union is seen on the outside of their headquarters in Washington, D.C., U.S., August 30, 2020. REUTERS/Andrew Kelly 

The logo of the International Brotherhood of Teamsters labor union is seen on the outside of their headquarters in Washington, D.C., U.S., August 30, 2020. REUTERS/Andrew Kelly 

Principal officer of Teamsters local 848 Eric Tate, 51, is tested for COVID-19 at an International Brotherhood of Teamsters testing site, as the spread of the coronavirus disease (COVID-19) continues, in Wilmington, near the Port of Los Angeles, California, U.S., June 25, 2020. REUTERS/Lucy Nicholson 

Safety manager Sabrina Hassan, 34, is tested for COVID-19 at an International Brotherhood of Teamsters testing site, as the spread of the coronavirus disease (COVID-19) continues, in Wilmington, near the Port of Los Angeles, California, U.S., June 25, 2020. REUTERS/Lucy Nicholson