U.S. President Joe Biden holds a joint press conference with British Prime Minister Rishi Sunak at the White House in Washington, U.S., June 8, 2023. REUTERS/Kevin Lamarque/Pool 

U.S. President Joe Biden holds a joint press conference with British Prime Minister Rishi Sunak at the White House in Washington, U.S., June 8, 2023. REUTERS/Kevin Lamarque/Pool 

U.S. President Joe Biden holds a joint press conference with British Prime Minister Rishi Sunak at the White House in Washington, U.S., June 8, 2023. REUTERS/Kevin Lamarque/Pool 

U.S. President Joe Biden holds a joint press conference with British Prime Minister Rishi Sunak at the White House in Washington, U.S., June 8, 2023. REUTERS/Kevin Lamarque/Pool 

U.S. President Joe Biden holds a joint press conference with British Prime Minister Rishi Sunak at the White House in Washington, U.S., June 8, 2023. REUTERS/Kevin Lamarque/Pool 

U.S. President Joe Biden holds a joint press conference with British Prime Minister Rishi Sunak at the White House in Washington, U.S., June 8, 2023. REUTERS/Kevin Lamarque/Pool 

British Prime Minister Rishi Sunak attends a joint press conference at the White House in Washington, U.S., June 8, 2023. REUTERS/Kevin Lamarque/Pool 

U.S. President Joe Biden holds a joint press conference with British Prime Minister Rishi Sunak at the White House in Washington, U.S., June 8, 2023. REUTERS/Kevin Lamarque/Pool 

British Prime Minister Rishi Sunak attends a joint press conference at the White House in Washington, U.S., June 8, 2023. REUTERS/Kevin Lamarque/Pool 

British Prime Minister Rishi Sunak attends a joint press conference at the White House in Washington, U.S., June 8, 2023. REUTERS/Kevin Lamarque/Pool 

U.S. President Joe Biden holds a joint press conference with British Prime Minister Rishi Sunak at the White House in Washington, U.S., June 8, 2023. REUTERS/Kevin Lamarque/Pool 

U.S. President Joe Biden holds a joint press conference with British Prime Minister Rishi Sunak at the White House in Washington, U.S., June 8, 2023. REUTERS/Kevin Lamarque/Pool 

U.S. President Joe Biden holds a joint press conference with British Prime Minister Rishi Sunak at the White House in Washington, U.S., June 8, 2023. REUTERS/Kevin Lamarque/Pool 

British Prime Minister Rishi Sunak attends a joint press conference at the White House in Washington, U.S., June 8, 2023. REUTERS/Kevin Lamarque/Pool 

British Prime Minister Rishi Sunak attends a joint press conference at the White House in Washington, U.S., June 8, 2023. REUTERS/Kevin Lamarque/Pool 

U.S. President Joe Biden holds a joint press conference with British Prime Minister Rishi Sunak at the White House in Washington, U.S., June 8, 2023. REUTERS/Kevin Lamarque/Pool 

U.S. President Joe Biden holds a joint press conference with British Prime Minister Rishi Sunak at the White House in Washington, U.S., June 8, 2023. REUTERS/Kevin Lamarque/Pool 

U.S. President Joe Biden holds a joint press conference with British Prime Minister Rishi Sunak at the White House in Washington, U.S., June 8, 2023. REUTERS/Kevin Lamarque/Pool 

U.S. President Joe Biden shows off air quality chart regarding smoke in the air from Canadian brush fires during the joint press conference with British Prime Minister Rishi Sunak at the White House in Washington, U.S., June 8, 2023. REUTERS/Kevin Lamarque/Pool 

U.S. President Joe Biden shows off air quality chart regarding smoke in the air from Canadian brush fires during the joint press conference with British Prime Minister Rishi Sunak at the White House in Washington, U.S., June 8, 2023. REUTERS/Kevin Lamarque/Pool 

U.S. President Joe Biden shows off air quality chart regarding smoke in the air from Canadian brush fires during the joint press conference with British Prime Minister Rishi Sunak at the White House in Washington, U.S., June 8, 2023. REUTERS/Kevin Lamarque/Pool 

U.S. President Joe Biden shows off air quality chart regarding smoke in the air from Canadian brush fires during the joint press conference with British Prime Minister Rishi Sunak at the White House in Washington, U.S., June 8, 2023. REUTERS/Kevin Lamarque/Pool 

U.S. President Joe Biden meets with British Prime Minister Rishi Sunak in the Oval Office of the White House in Washington, U.S., June 8, 2023. REUTERS/Kevin Lamarque/Pool REFILE - QUALITY REPEAT 

U.S. President Joe Biden meets with British Prime Minister Rishi Sunak in the Oval Office of the White House in Washington, U.S., June 8, 2023. REUTERS/Kevin Lamarque/Pool REFILE - QUALITY REPEAT 

U.S. President Joe Biden meets with British Prime Minister Rishi Sunak in the Oval Office of the White House in Washington, U.S., June 8, 2023. REUTERS/Kevin Lamarque/Pool REFILE - QUALITY REPEAT 

U.S. President Joe Biden meets with British Prime Minister Rishi Sunak in the Oval Office of the White House in Washington, U.S., June 8, 2023. REUTERS/Kevin Lamarque/Pool REFILE - QUALITY REPEAT 

British Prime Minister Rishi Sunak attends a Washington Nationals baseball game during his visit to Washington, U.S., June 7, 2023. REUTERS/Kevin Lamarque/Pool 

British Prime Minister Rishi Sunak sings God Save the King with Stuart Taylor, the CEO of the Allied Forces Foundation, and Washington Nationals manager Dave Martinez while attending a Washington Nationals baseball game during his visit to Washington, U.S., June 7, 2023. REUTERS/Kevin Lamarque/Pool 

British Prime Minister Rishi Sunak attends a Washington Nationals baseball game during his visit to Washington, U.S., June 7, 2023. REUTERS/Kevin Lamarque/Pool 

British Prime Minister Rishi Sunak poses with Washington Nationals mascot "Screech" as he attends a Washington Nationals baseball game during his visit to Washington, U.S., June 7, 2023. REUTERS/Kevin Lamarque/Pool TPX IMAGES OF THE DAY 

British Prime Minister Rishi Sunak waves to spectators as he attends a Washington Nationals baseball game during his visit to Washington, U.S., June 7, 2023. REUTERS/Kevin Lamarque/Pool 

British Prime Minister Rishi Sunak poses with Washington Nationals mascot "Screech" as he attends a Washington Nationals baseball game during his visit to Washington, U.S., June 7, 2023. REUTERS/Kevin Lamarque/Pool 

British Prime Minister Rishi Sunak greets Washington Nationals mascot "Screech" as he attends a Washington Nationals baseball game during his visit to Washington, U.S., June 7, 2023. REUTERS/Kevin Lamarque/Pool 

British Prime Minister Rishi Sunak poses with umpires and the Washington Nationals manager Dave Martinez as he attends a Washington Nationals baseball game during his visit to Washington, U.S., June 7, 2023. REUTERS/Kevin Lamarque/Pool 

British Prime Minister Rishi Sunak tosses a baseball while attending a Washington Nationals baseball game during his visit to Washington, U.S., June 7, 2023. REUTERS/Kevin Lamarque/Pool TPX IMAGES OF THE DAY 

British Prime Minister Rishi Sunak meets with umpires and Washington Nationals manager Dave Martinez as he attends a Washington Nationals baseball game during his visit to Washington, U.S., June 7, 2023. REUTERS/Kevin Lamarque/Pool 

British Prime Minister Rishi Sunak attends a Washington Nationals baseball game during his visit to Washington, U.S., June 7, 2023. REUTERS/Kevin Lamarque/Pool 

British Prime Minister Rishi Sunak meets with umpires and Washington Nationals manager Dave Martinez as he attends a Washington Nationals baseball game during his visit to Washington, U.S., June 7, 2023. REUTERS/Kevin Lamarque/Pool TPX IMAGES OF THE DAY 

British Prime Minister Rishi Sunak watches a drone demonstration as he visits the Friendship Technology Preparatory High School during his trip to Washington, U.S., June 7, 2023. REUTERS/Kevin Lamarque/Pool 

British Prime Minister Rishi Sunak takes part in a sustainability project as he visits the Friendship Technology Preparatory High School during his trip to Washington, U.S., June 7, 2023. REUTERS/Kevin Lamarque/Pool 

British Prime Minister Rishi Sunak looks at a 3D printed chess board as he visits the Friendship Technology Preparatory High School during his trip to Washington, U.S., June 7, 2023. REUTERS/Kevin Lamarque/Pool 

British Prime Minister Rishi Sunak watches a drone demonstration as he visits the Friendship Technology Preparatory High School during his trip to Washington, U.S., June 7, 2023. REUTERS/Kevin Lamarque/Pool 

British Prime Minister Rishi Sunak takes part in a sustainability project as he visits the Friendship Technology Preparatory High School during his trip to Washington, U.S., June 7, 2023. REUTERS/Kevin Lamarque/Pool 

A student talks about a drone as British Prime Minister Rishi Sunak visits the Friendship Technology Preparatory High School during his trip to Washington, U.S., June 7, 2023. REUTERS/Kevin Lamarque/Pool 

British Prime Minister Rishi Sunak watches a drone demonstration as he visits the Friendship Technology Preparatory High School during his trip to Washington, U.S., June 7, 2023. REUTERS/Kevin Lamarque/Pool 

British Prime Minister Rishi Sunak takes part in a science experiment as he visits the Friendship Technology Preparatory High School during his trip to Washington, U.S., June 7, 2023. REUTERS/Kevin Lamarque/Pool 

British Prime Minister Rishi Sunak watches a drone demonstration as he visits the Friendship Technology Preparatory High School during his trip to Washington, U.S., June 7, 2023. REUTERS/Kevin Lamarque/Pool 

British Prime Minister Rishi Sunak greets students as he visits the Friendship Technology Preparatory High School during his trip to Washington, U.S., June 7, 2023. REUTERS/Kevin Lamarque/Pool 

British Prime Minister Rishi Sunak and U.S. Senate Majority Leader Chuck Schumer (D-NY) meet at the U.S. Capitol in Washington, U.S., June 7, 2023. REUTERS/Kevin Lamarque/Pool 

British Prime Minister Rishi Sunak, U.S. Senate Majority Leader Chuck Schumer (D-NY), U.S. Senate Minority Leader Mitch McConnell (R-KY), and U.S. Senator Susan Collins (R-ME) pose at the U.S. Capitol in Washington, U.S., June 7, 2023. REUTERS/Kevin Lamarque/Pool 

British Prime Minister Rishi Sunak and U.S. Senate Majority Leader Chuck Schumer (D-NY) prepare to shake hands next to U.S. Senate Minority Leader Mitch McConnell (R-KY) and U.S. Senator Susan Collins (R-ME) at the U.S. Capitol in Washington, U.S., June 7, 2023. REUTERS/Kevin Lamarque/Pool 

British Prime Minister Rishi Sunak and U.S. Senate Majority Leader Chuck Schumer (D-NY) shake hands next to U.S. Senate Minority Leader Mitch McConnell (R-KY) and U.S. Senator Susan Collins (R-ME) at the U.S. Capitol in Washington, U.S., June 7, 2023. REUTERS/Kevin Lamarque/Pool 

British Prime Minister Rishi Sunak and U.S. Senate Majority Leader Chuck Schumer (D-NY) meet at the U.S. Capitol in Washington, U.S., June 7, 2023. REUTERS/Kevin Lamarque/Pool 

British Prime Minister Rishi Sunak and U.S. Senate Majority Leader Chuck Schumer (D-NY) shake hands next to U.S. Senate Minority Leader Mitch McConnell (R-KY) at the U.S. Capitol in Washington, U.S., June 7, 2023. REUTERS/Kevin Lamarque/Pool 

British Prime Minister Rishi Sunak and U.S. House Speaker Kevin McCarthy (R-CA) meet at the U.S. Capitol in Washington, U.S., June 7, 2023. REUTERS/Kevin Lamarque/Pool 

British Prime Minister Rishi Sunak and U.S. House Speaker Kevin McCarthy (R-CA) meet at the U.S. Capitol in Washington, U.S., June 7, 2023. REUTERS/Kevin Lamarque/Pool 

British Prime Minister Rishi Sunak and U.S. House Speaker Kevin McCarthy (R-CA) meet at the U.S. Capitol in Washington, U.S., June 7, 2023. REUTERS/Kevin Lamarque/Pool 

British Prime Minister Rishi Sunak and U.S. House Speaker Kevin McCarthy (R-CA) meet at the U.S. Capitol in Washington, U.S., June 7, 2023. REUTERS/Kevin Lamarque/Pool 

British Prime Minister Rishi Sunak speaks as he is interviewed with the U.S. Capitol Dome in the background during his trip to Washington, U.S., June 7, 2023. REUTERS/Kevin Lamarque/Pool 

British Prime Minister Rishi Sunak speaks as he is interviewed with the U.S. Capitol Dome in the background during his trip to Washington, U.S., June 7, 2023. REUTERS/Kevin Lamarque/Pool