Democratic New York City Mayoral candidate Andrew Yang posses for a selfie with a commuter while riding the subway during the New York City primary mayoral election, in New York City, U.S., June 22, 2021. REUTERS/Andrew Kelly

Democratic New York City Mayoral candidate Andrew Yang walks past a person in a subway station during the New York City primary mayoral election, in Manhattan, New York City, U.S., June 22, 2021. REUTERS/Andrew Kelly TPX IMAGES OF THE DAY

Democratic New York City Mayoral candidate Andrew Yang walks through subway turnstiles while campaigning during the New York City primary mayoral election, in Manhattan, New York City, U.S., June 22, 2021. REUTERS/Andrew Kelly

Democratic candidate for New York City Mayor Andrew Yang greets a driver in her vehicle while campaigning outside the 96th Street subway station on primary election day in Manhattan in New York City, New York, U.S., June 22, 2021. REUTERS/Mike Segar

Democratic candidate for New York City Mayor Andrew Yang greets commuters while campaigning outside the 96th Street subway station on primary election day in Manhattan in New York City, New York, U.S., June 22, 2021. REUTERS/Mike Segar

Democratic candidate for New York City Mayor Andrew Yang greets commuters while campaigning outside the 96th Street subway station on primary election day in Manhattan in New York City, New York, U.S., June 22, 2021. REUTERS/Mike Segar

Democratic candidate for New York City Mayor Andrew Yang greets commuters while campaigning outside the 96th Street subway station on primary election day in Manhattan in New York City, New York, U.S., June 22, 2021. REUTERS/Mike Segar

Democratic candidate for New York City Mayor Andrew Yang speaks with Robert Simon, a homeless man, while campaigning outside the 96th Street subway station on primary election day in Manhattan in New York City, New York, U.S., June 22, 2021. REUTERS/Mike Segar

Democratic candidate for New York City Mayor Andrew Yang greets commuters while campaigning outside the 96th Street subway station on primary election day in Manhattan in New York City, New York, U.S., June 22, 2021. REUTERS/Mike Segar

Democratic candidate for New York City Mayor Andrew Yang greets commuters while campaigning outside the 96th Street subway station on primary election day in Manhattan in New York City, New York, U.S., June 22, 2021. REUTERS/Mike Segar

A baby is pushed in a stroller underneath the subway platform along Roosevelt Avenue in the Queens borough of New York City, U.S., June 16, 2021. REUTERS/Shannon Stapleton

U.S. Senator Jon Tester (D-MT) transits the Senate subway as he arrives at the U.S. Capitol in Washington, U.S., June 14, 2021. REUTERS/Evelyn Hockstein

U.S. Senator Jeanne Shaheen (D-MA) transits the Senate subway as she arrives at the U.S. Capitol in Washington, U.S., June 14, 2021. REUTERS/Evelyn Hockstein

U.S. Senate Minority Leader Mitch McConnell (R-KY) exits a U.S. Senate subway car as he arrives for a vote in the Senate on Capitol Hill in Washington, U.S., June 10, 2021. REUTERS/Evelyn Hockstein

U.S. Senate Minority Leader Mitch McConnell (R-KY) arrives via the U.S. Senate subway for a vote in the Senate on Capitol Hill in Washington, U.S., June 10, 2021. REUTERS/Evelyn Hockstein

U.S. Senate Minority Leader Mitch McConnell (R-KY) arrives via the U.S. Senate subway for a vote in the Senate on Capitol Hill in Washington, U.S., June 10, 2021. REUTERS/Evelyn Hockstein

U.S. Senator Jon Tester (D-MT) arrives from the U.S. Senate subway for a vote in the Senate on Capitol Hill in Washington, U.S., June 10, 2021. REUTERS/Evelyn Hockstein

U.S. Senate Minority Leader Mitch McConnell (R-KY) arrives in a U.S. Senate subway car for a vote in the Senate on Capitol Hill in Washington, U.S., June 10, 2021. REUTERS/Evelyn Hockstein

U.S. Senate Minority Leader Mitch McConnell (R-KY) arrives in a U.S. Senate subway car for a vote in the Senate on Capitol Hill in Washington, U.S., June 10, 2021. REUTERS/Evelyn Hockstein TPX IMAGES OF THE DAY

U.S. Senator Mitt Romney (R-UT) laughs while speaking to reporters as he arrives in a U.S. Senate subway car for a vote in the Senate on Capitol Hill in Washington, U.S., June 10, 2021. REUTERS/Evelyn Hockstein

U.S. Senator Jeanne Shaheen (D-NH) arrives in a U.S. Senate subway car for a Senate vote on Capitol Hill in Washington, U.S., June 10, 2021. REUTERS/Evelyn Hockstein

U.S. Senator Mitt Romney (R-UT) speak to reporters as he arrives from the U.S. Senate subway for a vote on Capitol Hill in Washington, U.S., June 10, 2021. REUTERS/Evelyn Hockstein

U.S. Senator Mitt Romney (R-UT) laughs while speaking to reporters as he arrives in a U.S. Senate subway car for a vote in the Senate on Capitol Hill in Washington, U.S., June 10, 2021. REUTERS/Evelyn Hockstein

U.S. Senator Susan Collins (R-ME) arrives from the U.S. Senate subway for a vote in the Senate on Capitol Hill in Washington, U.S., June 10, 2021. REUTERS/Evelyn Hockstein

U.S. Senate Minority Leader Mitch McConnell (R-KY) boards the subway on Capitol Hill in Washington, U.S., June 9, 2021. REUTERS/Leah Millis

U.S. Senator Susan Collins (R-ME) walks through the subway on Capitol Hill in Washington, U.S., June 9, 2021. REUTERS/Leah Millis

U.S. Senate Minority Leader Mitch McConnell (R-KY) walks through the subway on Capitol Hill in Washington, U.S., June 9, 2021. REUTERS/Leah Millis

Sen. Sheldon Whitehouse (D-RI) walks through the subway on Capitol Hill in Washington, U.S., June 9, 2021. REUTERS/Leah Millis

U.S. Senator Lisa Murkowski (R-AK) walks through the subway on Capitol Hill in Washington, U.S., June 9, 2021. REUTERS/Leah Millis

U.S. Senator Tom Cotton (R-AR), with his family, transits the subway system under the U.S. Capitol in Washington, U.S. June 8, 2021. REUTERS/Jonathan Ernst

U.S. Senator Mitt Romney (R-UT) transits the subway system under the U.S. Capitol in Washington, U.S. June 8, 2021. REUTERS/Jonathan Ernst

U.S. Senator Ted Cruz (R-TX) and political commentator George Will transit the subway system under the U.S. Capitol in Washington, U.S. June 8, 2021. REUTERS/Jonathan Ernst

U.S. Senator Elizabeth Warren (D-MA) transits the subway system under the U.S. Capitol in Washington, U.S. June 8, 2021. REUTERS/Jonathan Ernst

U.S. Senator Rick Scott (R-FL) transits the subway system under the U.S. Capitol in Washington, U.S. June 8, 2021. REUTERS/Jonathan Ernst

U.S. Senator Raphael Warnock (D-GA) transits the subway system under the U.S. Capitol in Washington, U.S. June 8, 2021. REUTERS/Jonathan Ernst

U.S. Senator Mitt Romney (R-UT) transits the subway system under the U.S. Capitol in Washington, U.S. June 8, 2021. REUTERS/Jonathan Ernst

U.S. Senator Lindsey Graham (R-SC) transits the subway system under the U.S. Capitol in Washington, U.S. June 8, 2021. REUTERS/Jonathan Ernst

U.S. Senator Josh Hawley (R-MO) transits the subway system under the U.S. Capitol in Washington, U.S. June 8, 2021. REUTERS/Jonathan Ernst

U.S. Senator Bob Menendez (D-NJ) transits the subway system under the U.S. Capitol in Washington, U.S. June 8, 2021. REUTERS/Jonathan Ernst

U.S. Senator Ron Johnson (R-WI) speaks to a reporter as he transits the subway system under the U.S. Capitol in Washington, U.S. June 8, 2021. REUTERS/Jonathan Ernst

U.S. Senator Lindsey Graham (R-SC) transits the subway system under the U.S. Capitol in Washington, U.S. June 8, 2021. REUTERS/Jonathan Ernst

U.S. Senator Rand Paul (R-KY) transits the subway system under the U.S. Capitol in Washington, U.S. June 8, 2021. REUTERS/Jonathan Ernst

U.S. Senate Minority Leader Mitch McConnell (R-KY) transits the subway system under the U.S. Capitol in Washington, U.S. June 8, 2021. REUTERS/Jonathan Ernst

U.S. Senate Minority Leader Mitch McConnell (R-KY) transits the subway system under the U.S. Capitol in Washington, U.S. June 8, 2021. REUTERS/Jonathan Ernst

A man walks by a panhandler's belongings outside the subway station in Times Square in New York City, U.S., June 7, 2021. Picture taken June 7, 2021. REUTERS/Shannon Stapleton

A man walks next to LGBT flag at the Se subway station during the LGBT pride month celebrations, in Sao Paulo, Brazil, June 5, 2021. Picture taken June 5, 2021. REUTERS/Carla Carniel

A man wearing a protective mask, following the coronavirus disease (COVID-19) outbreak, makes his way at a subway station, ahead of the Tokyo 2020 Olympic Games in Tokyo, Japan, May 27, 2021. REUTERS/Kim Kyung-Hoon

A woman wearing a protective mask, following the coronavirus disease (COVID-19) outbreak, stands next to a glass wall at a subway station ahead of the Tokyo 2020 Olympic Games, in Tokyo, Japan, May 27, 2021. REUTERS/Kim Kyung-Hoon

People ride on an uptown bound subway during the outbreak of the coronavirus disease (COVID-19) in Manhattan, New York City, New York, U.S., May 25, 2021. REUTERS/Andrew Kelly

A couple kiss through their protective face masks at a subway station following the coronavirus disease (COVID-19) outbreak, in Shanghai, China May 24, 2021. REUTERS/Aly Song

U.S. Senator Shelley Moore Capito (R-WV) and Senator Roy Blunt (R-MO) speak in the subway system beneath the U.S. Capitol in Washington, U.S. May 18, 2021. REUTERS/Jonathan Ernst

U.S. Senator Shelley Moore Capito (R-WV) and Senator Roy Blunt (R-MO) speak in the subway system beneath the U.S. Capitol in Washington, U.S. May 18, 2021. REUTERS/Jonathan Ernst

MTA security contractor Janet Santiago reacts after she received a shot of the Johnson & Johnson vaccine for the coronavirus disease (COVID-19) during the opening of MTA's public vaccination program at the Coney Island subway station in the Brooklyn borough of New York City, New York, U.S., May 12, 2021. REUTERS/Brendan McDermid

Commuters receive the Johnson & Johnson vaccine for the coronavirus disease (COVID-19) during the opening of MTA's public vaccination program at the Coney Island subway station in the Brooklyn borough of New York City, New York, U.S., May 12, 2021. REUTERS/Brendan McDermid

MTA security contractor Janet Santiago prepares to receive a shot of the Johnson & Johnson vaccine for the coronavirus disease (COVID-19) during the opening of MTA's public vaccination program at the Coney Island subway station in the Brooklyn borough of New York City, New York, U.S., May 12, 2021. REUTERS/Brendan McDermid

A commuter receives a shot of the Johnson & Johnson vaccine for the coronavirus disease (COVID-19) during the opening of MTA's public vaccination program at the Coney Island subway station in the Brooklyn borough of New York City, New York, U.S., May 12, 2021. REUTERS/Brendan McDermid

MTA security contractor Janet Santiago receives a shot of the Johnson & Johnson vaccine for the coronavirus disease (COVID-19) during the opening of MTA's public vaccination program at the Coney Island subway station in the Brooklyn borough of New York City, New York, U.S., May 12, 2021. REUTERS/Brendan McDermid

A commuter receives a shot of the Johnson & Johnson vaccine for the coronavirus disease (COVID-19) during the opening of MTA's public vaccination program at a subway station in the Brooklyn borough of New York City, New York, U.S., May 12, 2021. REUTERS/Brendan McDermid

A commuter receives a shot of the Johnson & Johnson vaccine for the coronavirus disease (COVID-19) during the opening of MTA's public vaccination program at a subway station in the Brooklyn borough of New York City, New York, U.S., May 12, 2021. REUTERS/Brendan McDermid