U.S. Senator Jeanne Shaheen (D-NH) looks on during a Senate Appropriations Committee hearing in Washington, U.S. June 17, 2021. Caroline Brehman/Pool via Reuters

U.S. Senator Jeanne Shaheen (D-NH) listens during a Senate Appropriations Committee hearing on the defense department?s budget request on Capitol Hill in Washington, U.S., June 17, 2021. REUTERS/Evelyn Hockstein/Pool

Britain's Prince Charles and Health Secretary Matt Hancock meet with NHS staff during a visit to Chelsea and Westminster hospital in London, Britain June 17, 2021. Steve Reigate/Pool via REUTERS

Britain's Prince Charles and Health Secretary Matt Hancock meet with NHS staff during a visit to Chelsea and Westminster hospital in London, Britain June 17, 2021. Steve Reigate/Pool via REUTERS

Britain's Health Secretary Matt Hancock and Prince Charles meet with NHS staff during a visit to Chelsea and Westminster hospital in London, Britain June 17, 2021. Steve Reigate/Pool via REUTERS

Britain's Health Secretary Matt Hancock bows as he meets with NHS staff during a visit to Chelsea and Westminster hospital in London, Britain June 17, 2021. Steve Reigate/Pool via REUTERS

Britain's Health Secretary Matt Hancock meets with NHS staff during a visit to Chelsea and Westminster hospital in London, Britain June 17, 2021. Steve Reigate/Pool via REUTERS

Britain's Health Secretary Matt Hancock meets with NHS staff during a visit to Chelsea and Westminster hospital in London, Britain June 17, 2021. Steve Reigate/Pool via REUTERS

Britain's Health Secretary Matt Hancock gestures as he meets with NHS staff during a visit to Chelsea and Westminster hospital in London, Britain June 17, 2021. Steve Reigate/Pool via REUTERS

Britain's Health Secretary Matt Hancock walks to meet with NHS staff during a visit to Chelsea and Westminster hospital in London, Britain June 17, 2021. Steve Reigate/Pool via REUTERS

Britain's Prince Charles meets NHS staff during a visit to Chelsea and Westminster hospital in London, Britain June 17, 2021. Steve Reigate/Pool via REUTERS

Britain's Health Secretary Matt Hancock reacts next to a dog as he meets NHS staff during a visit to Chelsea and Westminster hospital in London, Britain June 17, 2021. Steve Reigate/Pool via REUTERS

Britain's Health Secretary Matt Hancock reacts next to a dog as he meets NHS staff during a visit to Chelsea and Westminster hospital in London, Britain June 17, 2021. Steve Reigate/Pool via REUTERS

Britain's Prince Charles walks with NHS staff and Health Secretary Matt Hancock during a tour of Chelsea and Westminster hospital in London, Britain June 17, 2021. Steve Reigate/Pool via REUTERS

Britain's Prince Charles reacts while chatting with NHS staff during a visit to Chelsea and Westminster hospital in London, Britain June 17, 2021. Steve Reigate/Pool via REUTERS

Britain's Prince Charles meets NHS staff during a visit to Chelsea and Westminster hospital in London, Britain June 17, 2021. Steve Reigate/Pool via REUTERS

Britain's Prince Charles meets NHS staff during a visit to Chelsea and Westminster hospital in London, Britain June 17, 2021. Steve Reigate/Pool via REUTERS

Senator Maggie Hassan (D-NH) boards a bus with bipartisan female senators outside the U.S. Capitol building before heading to dinner hosted by Vice-president Kamala Harris at her residence in Washington, U.S., June 15, 2021. REUTERS/Evelyn Hockstein

Bipartisan female senators(L-R) Senator Mazie Hirono (D-HI), Senator Tammy Baldwin (D-WI), Senator Kristen Gillibrand (D-NY), Senator Maggie Hassan (D-NH), Senator Shelley Moore Capito (R-WV), and Senator Deb Fischer (R-NE), wait on a bus outside the U.S. Capitol building before heading to dinner hosted by Vice-president Kamala Harris at her residence in Washington, U.S., June 15, 2021. REUTERS/Evelyn Hockstein

Bipartisan female senators(L-R) Senator Mazie Hirono (D-HI), Senator Tammy Baldwin (D-WI), Senator Kristen Gillibrand (D-NY), Senator Maggie Hassan (D-NH), Senator Shelley Moore Capito (R-WV), and Senator Deb Fischer (R-NE), wait on a bus outside the U.S. Capitol building before heading to dinner hosted by Vice-president Kamala Harris at her residence in Washington, U.S., June 15, 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

Merrick Garland, U.S. attorney general, shakes hands with Senator Jeanne Shaheen (D-NH) while departing a Senate Appropriations Subcommittee on Commerce, Justice, Science, and Related Agencies hearing at the Dirksen Senate Office building in Washington, D.C., U.S., June 9, 2021. Stefani Reynolds/Pool via REUTERS

Merrick Garland, U.S. attorney general speaks to Senator Jeanne Shaheen (D-NH) and Senator Lisa Murkowski (R-AK) during a break in the Senate Appropriations Subcommittee on Commerce, Justice, Science, and Related Agencies hearing at the Dirksen Senate Office building in Washington, D.C., U.S., June 9, 2021. Stefani Reynolds/Pool via REUTERS

Merrick Garland, U.S. attorney general speaks to Senator Jeanne Shaheen (D-NH) and Senator Lisa Murkowski (R-AK) during a break in the Senate Appropriations Subcommittee on Commerce, Justice, Science, and Related Agencies hearing at the Dirksen Senate Office building in Washington, D.C., U.S., June 9, 2021. Stefani Reynolds/Pool via REUTERS

Senator Jeanne Shaheen (D-NH) speaks to Senator Lisa Murkowski (R-AK) during a Senate Appropriations Subcommittee on Commerce, Justice, Science, and Related Agencies hearing at the Dirksen Senate Office building in Washington, D.C., U.S., June 9, 2021. Stefani Reynolds/Pool via REUTERS

Senator Jeanne Shaheen (D-NH) speaks to Senator Susan Collins (R-ME) during a Senate Appropriations Subcommittee on Commerce, Justice, Science, and Related Agencies hearing at the Dirksen Senate Office building in Washington, D.C., U.S., June 9, 2021. Stefani Reynolds/Pool via REUTERS

Senator Jeanne Shaheen (D-NH) listens during a Senate Appropriations Subcommittee on Commerce, Justice, Science, and Related Agencies hearing at the Dirksen Senate Office building in Washington, D.C., U.S., June 9, 2021. Stefani Reynolds/Pool via REUTERS

Senator Jeanne Shaheen (D-NH) arrives to a Senate Appropriations Subcommittee on Commerce, Justice, Science, and Related Agencies hearing at the Dirksen Senate Office building in Washington, D.C., U.S., June 9, 2021. Stefani Reynolds/Pool via REUTERS

U.S. Sen. Jeanne Shaheen, D-NH, questions Xavier Becerra, Secretary of the Department of Health and Human Services (HHS), as he testifies before a Senate Appropriations Subcommittee at the U.S. Capitol in Washington, DC, U.S. June 9, 2021. Tasos Katopodis/Pool via REUTERS

U.S. Sen. Jeanne Shaheen, D-NH, questions Xavier Becerra, Secretary of the Department of Health and Human Services (HHS), as he testifies before a Senate Appropriations Subcommittee at the U.S. Capitol in Washington, DC, U.S. June 9, 2021. Tasos Katopodis/Pool via REUTERS

Senator Jeanne Shaheen (D-NH) speaks during a Senate Appropriations Subcommittee hearing in Washington, D.C., U.S., June 9, 2021. Al Drago/Pool via REUTERS

U.S. Senator Maggie Hassan (D-NH) attends a Senate Finance Committee hearing on the IRS budget request on Capitol Hill in Washington U.S., June 8, 2021. REUTERS/Evelyn Hockstein/Pool

Senator Maggie Hassan (D-NH) speaks during a Senate Homeland Security and Government Affairs Committee hearing on the Colonial Pipeline cyber attack, at the U.S. Capitol in Washington, U.S., June 8, 2021. Graeme Jennings/Pool via REUTERS

Senator Maggie Hassan (D-NH) looks on during a Senate Homeland Security and Government Affairs Committee hearing on the Colonial Pipeline cyber attack, at the U.S. Capitol in Washington, U.S., June 8, 2021. Graeme Jennings/Pool via REUTERS

British Secretary of State for Health Matt Hancock with Oxford University Hosptials NHS Foundation Trust's Chief Nursing Officer Sam Foster takes part in a memorial tree planting ceremony at Oxford Botanic Gardens, following a G7 health ministers meeting, ahead of the G7 leaders' summit, at Mansfield College, Oxford University in Oxford, Britain June 4, 2021. Steve Parsons/PA Wire/Pool via REUTERS

Oxford University Hosptials NHS Foundation Trust's Chief Nursing Officer Sam Foster takes part in a memorial tree planting ceremony at Oxford Botanic Gardens, following a G7 health ministers meeting, ahead of the G7 leaders' summit, at Mansfield College, Oxford University in Oxford, Britain June 4, 2021. Steve Parsons/PA Wire/Pool via REUTERS

U.S. Senator Chris Murphy (D-CT) speaks next to U.S. Senator Jeanne Shaheen (D-NH) as they attend a news briefing after their meeting with Ukraine's President Volodymyr Zelenskiy in front of the Presidential Office building in Kyiv, Ukraine, June 2, 2021. REUTERS/Gleb Garanich

U.S. senator Jeanne Shaheen (D-NH) reacts next to Rob Portman (R-OH) after a news briefing after their meeting with Ukraine's President Volodymyr Zelenskiy in front of the Presidential Office building in Kyiv, Ukraine, June 2, 2021. REUTERS/Gleb Garanich

U.S. senators Jeanne Shaheen (D-NH), Rob Portman (R-OH) and Chris Murphy (D-CT) attend a news briefing after their meeting with Ukraine's President Volodymyr Zelenskiy in front of the Presidential Office building in Kyiv, Ukraine, June 2, 2021. REUTERS/Gleb Garanich

U.S. senators Jeanne Shaheen (D-NH), Rob Portman (R-OH) and Chris Murphy (D-CT) attend a news briefing after their meeting with Ukraine's President Volodymyr Zelenskiy in front of the Presidential Office building in Kyiv, Ukraine, June 2, 2021. REUTERS/Gleb Garanich

U.S. senators Rob Portman (R-OH) and Chris Murphy (D-CT) attend a news briefing after their meeting with Ukraine's President Volodymyr Zelenskiy in front of the Presidential Office building in Kyiv, Ukraine, June 2, 2021. REUTERS/Gleb Garanich

U.S. senators Jeanne Shaheen (D-NH) and Chris Murphy (D-CT) attend a news briefing after their meeting with Ukraine's President Volodymyr Zelenskiy in front of the Presidential Office building in Kyiv, Ukraine, June 2, 2021. REUTERS/Gleb Garanich

U.S. senators Jeanne Shaheen (D-NH), Rob Portman (R-OH) and Chris Murphy (D-CT) attend a news briefing after their meeting with Ukraine's President Volodymyr Zelenskiy in front of the Presidential Office building in Kyiv, Ukraine, June 2, 2021. REUTERS/Gleb Garanich

U.S. senators Jeanne Shaheen (D-NH), Rob Portman (R-OH) attend a news briefing after their meeting with Ukraine's President Volodymyr Zelenskiy in front of the Presidential Office building in Kyiv, Ukraine, June 2, 2021. REUTERS/Gleb Garanich

U.S. senators Jeanne Shaheen (D-NH), Rob Portman (R-OH) and Chris Murphy (D-CT) attend a news briefing after their meeting with Ukraine's President Volodymyr Zelenskiy in front of the Presidential Office building in Kyiv, Ukraine, June 2, 2021. REUTERS/Gleb Garanich

U.S. Senators Jeanne Shaheen (D-NH), Rob Portman (R-OH) and Chris Murphy (D-CT) speak with Ukrainian Foreign Minister Dmytro Kuleba next to a memorial to Ukrainian soldiers, who were killed in a recent conflict in the country's eastern regions, in Kyiv, Ukraine, June 2, 2021. REUTERS/Valentyn Ogirenko

Ukrainian Foreign Minister Dmytro Kuleba talks to U.S. senators Jeanne Shaheen (D-NH), Rob Portman (R-OH) and Chris Murphy (D-CT), and to acting United States Ambassador to Ukraine Kristina Kvien, next to a memorial to Ukrainian soldiers, who were killed in a recent conflict in the country's eastern regions, in Kyiv, Ukraine, June 2, 2021. REUTERS/Valentyn Ogirenko

U.S. Senators Jeanne Shaheen (D-NH) and Rob Portman (R-OH) speak with Ukrainian Foreign Minister Dmytro Kuleba next to a memorial to Ukrainian soldiers, who were killed in a recent conflict in the country's eastern regions, in Kyiv, Ukraine, June 2, 2021. REUTERS/Valentyn Ogirenko

U.S. Senator Jeanne Shaheen (D-NH) looks on as U.S. Senators Rob Portman (R-OH) and Chris Murphy (D-CT) lay flowers at the memorial to Ukrainian soldiers, who were killed in a recent conflict in the country's eastern regions, in Kyiv, Ukraine, June 2, 2021. REUTERS/Valentyn Ogirenko

U.S. Senators Jeanne Shaheen (D-NH), Rob Portman (R-OH) and Chris Murphy (D-CT) lay flowers at the memorial to Ukrainian soldiers, who were killed in a recent conflict in the country's eastern regions, in Kyiv, Ukraine, June 2, 2021. REUTERS/Valentyn Ogirenko

NH Collection Hotel general manager Francisco Viana Brito poses for a portrait as Portugal's northern city of Porto prepares to host the Champions League's final match and hotels and bars hope for a boost after the tourism sector was ravaged by the coronavirus disease (COVID-19) pandemic, in Porto, Portugal May 26, 2021. REUTERS/Violeta Santos Moura

NH Collection Hotel staff is seen working as Portugal's northern city of Porto prepares to host the Champions League's final match and hotels and bars hope for a boost after the tourism sector was ravaged by the coronavirus disease (COVID-19) pandemic, in Porto, Portugal May 26, 2021. REUTERS/Violeta Santos Moura

Cleaning staff is seen walking in a corridor at the NH Collection Hotel as thousands of English fans make their way to Portugal's northern city of Porto for the Champions League's final match and hotels and bars hope for a boost after the tourism sector was ravaged by the coronavirus disease (COVID-19) pandemic, in Porto, Portugal May 26, 2021. REUTERS/Violeta Santos Moura

Cleaning staff is seen entering a room at the NH Collection Hotel as thousands of English fans make their way to Portugal's northern city of Porto for the Champions League's final match and hotels and bars hope for a boost after the tourism sector was ravaged by the coronavirus disease (COVID-19) pandemic, in Porto, Portugal May 26, 2021. REUTERS/Violeta Santos Moura

Cleaning staff is seen entering a room at the NH Collection Hotel as thousands of English fans make their way to Portugal's northern city of Porto for the Champions League's final match and hotels and bars hope for a boost after the tourism sector was ravaged by the coronavirus disease (COVID-19) pandemic, in Porto, Portugal May 26, 2021. REUTERS/Violeta Santos Moura

Cleaning staff is seen at a room at the NH Collection Hotel as thousands of English fans make their way to Portugal's northern city of Porto for the Champions League's final match and hotels and bars hope for a boost after the tourism sector was ravaged by the coronavirus disease (COVID-19) pandemic, in Porto, Portugal May 26, 2021. REUTERS/Violeta Santos Moura

Britain's Prince William and Catherine, Duchess of Cambridge, speak with actor Tipper Seifert-Cleveland, as they host NHS Charities Together and NHS staff at a unique drive-in cinema to watch a special screening of Disney's Cruella at the Palace of Holyroodhouse in Edinburgh, Scotland, Britain, May 26, 2021. Chris Jackson/Pool via REUTERS

Britain's Prince William and Catherine, Duchess of Cambridge, speak with actor Tipper Seifert-Cleveland, as they host NHS Charities Together and NHS staff at a unique drive-in cinema to watch a special screening of Disney's Cruella at the Palace of Holyroodhouse in Edinburgh, Scotland, Britain, May 26, 2021. Chris Jackson/Pool via REUTERS

Catherine, Duchess of Cambridge, greets actor Tipper Seifert-Cleveland, as Catherine and Britain's Prince William host NHS Charities Together and NHS staff at a unique drive-in cinema to watch a special screening of Disney's Cruella at the Palace of Holyroodhouse in Edinburgh, Scotland, Britain, May 26, 2021. Chris Jackson/Pool via REUTERS

Catherine, Duchess of Cambridge, speaks as she and Britain's Prince William host NHS Charities Together and NHS staff at a unique drive-in cinema to watch a special screening of Disney's Cruella at the Palace of Holyroodhouse in Edinburgh, Scotland, Britain, May 26, 2021. Chris Jackson/Pool via REUTERS