U.S. Vice President Kamala Harris and her husband Douglas Emhoff wave as they arrive in Tanzania, the second stop of a three-nation tour of Africa, at the Julius Nyerere Airport in Dar es Salaam, Tanzania March 29, 2023. REUTERS/Emmanuel Herman/Pool 

U.S. Vice President Kamala Harris walks with her Tanzanian counterpart Philip Mpango as she arrives in Tanzania, the second stop of a three-nation tour of Africa, at the Julius Nyerere Airport in Dar es Salaam, Tanzania March 29, 2023. REUTERS/Emmanuel Herman/Pool 

U.S. Vice President Kamala Harris and her husband Douglas Emhoff disembark as they arrive in Tanzania, the second stop of a three-nation tour of Africa, at the Julius Nyerere Airport in Dar es Salaam, Tanzania March 29, 2023. REUTERS/Emmanuel Herman/Pool 

U.S. Vice President Kamala Harris and her husband Douglas Emhoff disembark as they arrive in Tanzania, the second stop of a three-nation tour of Africa, at the Julius Nyerere Airport in Dar es Salaam, Tanzania March 29, 2023. REUTERS/Emmanuel Herman/Pool 

U.S. Vice President Kamala Harris talks to her Tanzanian counterpart Philip Mpango as she arrives in Tanzania, the second stop of a three-nation tour of Africa, at the Julius Nyerere Airport in Dar es Salaam, Tanzania March 29, 2023. REUTERS/Emmanuel Herman/Pool 

U.S. Vice President Kamala Harris accompanied by Second Gentleman Doug Emhoff, depart the Kotoka International airport to continue with her trip to Tanzania and Zambia, in Accra, Ghana, March 29, 2023. REUTERS/Francis Kokoroko 

U.S. Vice President Kamala Harris accompanied by Second Gentleman Doug Emhoff, depart the Kotoka International airport to continue with her trip to Tanzania and Zambia, in Accra, Ghana, March 29, 2023. REUTERS/Francis Kokoroko 

U.S. Vice President Kamala Harris accompanied by Second Gentleman Doug Emhoff, depart the Kotoka International airport to continue with her trip to Tanzania and Zambia, in Accra, Ghana, March 29, 2023. REUTERS/Francis Kokoroko 

U.S. Vice President Kamala Harris accompanied by Second Gentleman Doug Emhoff, depart the Kotoka International airport to continue with her trip to Tanzania and Zambia, in Accra, Ghana, March 29, 2023. REUTERS/Francis Kokoroko 

An Air Astana plane flies over Almaty International Airport, in Almaty, Kazakhstan March 29, 2023. REUTERS/Pavel Mikheyev 

German Air Force Eurofighter Typhoon jet escorts the plane carrying Britain’s King Charles as it arrives in Berlin Brandenburg Airport 'Willy Brandt' in Berlin, Germany, March 29, 2023. REUTERS/Phil Noble 

German Air Force Eurofighter Typhoon jet escorts the plane carrying Britain’s King Charles as it arrives in Berlin Brandenburg Airport 'Willy Brandt' in Berlin, Germany, March 29, 2023. REUTERS/Phil Noble 

German Air Force Eurofighter Typhoon jet escorts the plane carrying Britain’s King Charles as it arrives in Berlin Brandenburg Airport 'Willy Brandt' in Berlin, Germany, March 29, 2023. REUTERS/Phil Noble 

German Air Force Eurofighter Typhoon jet escorts the plane carrying Britain’s King Charles as it arrives in Berlin Brandenburg Airport 'Willy Brandt' in Berlin, Germany, March 29, 2023. REUTERS/Phil Noble 

German Air Force Eurofighter Typhoon jet escorts the plane carrying Britain’s King Charles as it arrives in Berlin Brandenburg Airport 'Willy Brandt' in Berlin, Germany, March 29, 2023. REUTERS/Phil Noble 

German Air Force Eurofighter Typhoon jet escorts the plane carrying Britain’s King Charles as it arrives in Berlin Brandenburg Airport 'Willy Brandt' in Berlin, Germany, March 29, 2023. REUTERS/Phil Noble 

Taiwanese President Tsai Ing-wen smiles towards the media before her departure to New York to start her trip to Guatemala and Belize at Taoyuan International Airport in Taoyuan, Taiwan March 29, 2023. REUTERS/Ann Wang 

Taiwanese President Tsai Ing-wen arrives for her departure to New York to start her trip to Guatemala and Belize at Taoyuan International Airport in Taoyuan, Taiwan March 29, 2023. REUTERS/Ann Wang 

Taiwanese President Tsai Ing-wen makes a speech before her departure to New York to start her trip to Guatemala and Belize at Taoyuan International Airport in Taoyuan, Taiwan March 29, 2023. REUTERS/Ann Wang 

Taiwanese President Tsai Ing-wen waves to the media before her departure to New York to start her trip to Guatemala and Belize at Taoyuan International Airport in Taoyuan, Taiwan March 29, 2023. REUTERS/Ann Wang 

Taiwanese President Tsai Ing-wen arrives for her departure to New York to start her trip to Guatemala and Belize at Taoyuan International Airport in Taoyuan, Taiwan March 29, 2023. REUTERS/Ann Wang 

A view shows FlyArystan planes at Almaty International Airport, in Almaty, Kazakhstan March 28, 2023. REUTERS/Pavel Mikheyev 

An employee cleans a cockpit window of an Air Astana plane at Almaty International Airport, in Almaty, Kazakhstan March 28, 2023. REUTERS/Pavel Mikheyev 

A view shows Air Astana and FlyArystan planes at Almaty International Airport, in Almaty, Kazakhstan March 28, 2023. REUTERS/Pavel Mikheyev 

A view shows Air Astana planes parked at Almaty International Airport, in Almaty, Kazakhstan March 28, 2023. REUTERS/Pavel Mikheyev 

Air Astana employees board a plane at Almaty International Airport, in Almaty, Kazakhstan March 28, 2023. REUTERS/Pavel Mikheyev 

A view shows Air Astana planes parked at Almaty International Airport, in Almaty, Kazakhstan March 28, 2023. REUTERS/Pavel Mikheyev 

U.S. President Joe Biden speaks with reporters before boarding Air Force One to return to Washington from Raleigh-Durham International Airport, Morrisville, North Carolina, U.S., March 28, 2023. REUTERS/Jonathan Ernst 

U.S. President Joe Biden speaks with reporters before boarding Air Force One to return to Washington from Raleigh-Durham International Airport, Morrisville, North Carolina, U.S., March 28, 2023. REUTERS/Jonathan Ernst 

U.S. President Joe Biden speaks with reporters before boarding Air Force One to return to Washington from Raleigh-Durham International Airport, Morrisville, North Carolina, U.S., March 28, 2023. REUTERS/Jonathan Ernst 

U.S. President Joe Biden speaks with reporters before boarding Air Force One to return to Washington from Raleigh-Durham International Airport, Morrisville, North Carolina, U.S., March 28, 2023. REUTERS/Jonathan Ernst 

U.S. President Joe Biden speaks with reporters before boarding Air Force One to return to Washington from Raleigh-Durham International Airport, Morrisville, North Carolina, U.S., March 28, 2023. REUTERS/Jonathan Ernst 

U.S. President Joe Biden speaks with reporters before boarding Air Force One to return to Washington from Raleigh-Durham International Airport, Morrisville, North Carolina, U.S., March 28, 2023. REUTERS/Jonathan Ernst 

U.S. President Joe Biden speaks with reporters before boarding Air Force One to return to Washington from Raleigh-Durham International Airport, Morrisville, North Carolina, U.S., March 28, 2023. REUTERS/Jonathan Ernst 

U.S. President Joe Biden speaks with reporters before boarding Air Force One to return to Washington from Raleigh-Durham International Airport, Morrisville, North Carolina, U.S., March 28, 2023. REUTERS/Jonathan Ernst 

U.S. President Joe Biden boards Air Force One to return to Washington from Raleigh-Durham International Airport, Morrisville, North Carolina, U.S., March 28, 2023. REUTERS/Jonathan Ernst 

U.S. President Joe Biden speaks with reporters before boarding Air Force One to return to Washington from Raleigh-Durham International Airport, Morrisville, North Carolina, U.S., March 28, 2023. REUTERS/Jonathan Ernst REFILE - QUALITY REPEAT 

U.S. President Joe Biden speaks with reporters before boarding Air Force One to return to Washington from Raleigh-Durham International Airport, Morrisville, North Carolina, U.S., March 28, 2023. REUTERS/Jonathan Ernst 

U.S. President Joe Biden speaks with reporters before boarding Air Force One to return to Washington from Raleigh-Durham International Airport, Morrisville, North Carolina, U.S., March 28, 2023. REUTERS/Jonathan Ernst 

U.S. President Joe Biden speaks with reporters before boarding Air Force One to return to Washington from Raleigh-Durham International Airport, Morrisville, North Carolina, U.S., March 28, 2023. REUTERS/Jonathan Ernst 

U.S. President Joe Biden speaks with reporters before boarding Air Force One to return to Washington from Raleigh-Durham International Airport, Morrisville, North Carolina, U.S., March 28, 2023. REUTERS/Jonathan Ernst 

U.S. President Joe Biden speaks with reporters before boarding Air Force One to return to Washington from Raleigh-Durham International Airport, Morrisville, North Carolina, U.S., March 28, 2023. REUTERS/Jonathan Ernst 

U.S. President Joe Biden speaks with reporters before boarding Air Force One to return to Washington from Raleigh-Durham International Airport, Morrisville, North Carolina, U.S., March 28, 2023. REUTERS/Jonathan Ernst 

U.S. President Joe Biden speaks with reporters before boarding Air Force One to return to Washington from Raleigh-Durham International Airport, Morrisville, North Carolina, U.S., March 28, 2023. REUTERS/Jonathan Ernst 

U.S. President Joe Biden boards Air Force One to return to Washington from Raleigh-Durham International Airport, Morrisville, North Carolina, U.S., March 28, 2023. REUTERS/Jonathan Ernst 

U.S. President Joe Biden speaks with reporters before boarding Air Force One to return to Washington from Raleigh-Durham International Airport, Morrisville, North Carolina, U.S., March 28, 2023. REUTERS/Jonathan Ernst 

U.S. President Joe Biden speaks with reporters before boarding Air Force One to return to Washington from Raleigh-Durham International Airport, Morrisville, North Carolina, U.S., March 28, 2023. REUTERS/Jonathan Ernst 

U.S. President Joe Biden arrives aboard Air Force One at Raleigh-Durham International Airport, Morrisville, North Carolina, U.S., March 28, 2023. REUTERS/Jonathan Ernst 

U.S. President Joe Biden speaks with U.S. Commerce Secretary Gina Raimondo and Governor of North Carolina Roy Cooper as he arrives aboard Air Force One at Raleigh-Durham International Airport, Morrisville, North Carolina, U.S., March 28, 2023. REUTERS/Jonathan Ernst 

U.S. President Joe Biden speaks with U.S. Commerce Secretary Gina Raimondo and Governor of North Carolina Roy Cooper as he arrives aboard Air Force One at Raleigh-Durham International Airport, Morrisville, North Carolina, U.S., March 28, 2023. REUTERS/Jonathan Ernst 

U.S. President Joe Biden arrives aboard Air Force One at Raleigh-Durham International Airport, Morrisville, North Carolina, U.S., March 28, 2023. REUTERS/Jonathan Ernst 

A private jet takes off as the plane of former U.S. President Donald Trump is parked at the Palm Beach International Airport, in West Palm Beach, Florida, U.S. March 28, 2023. REUTERS/Ricardo Arduengo 

A man walks past the plane of former U.S. President Donald Trump parked at the Palm Beach International Airport, in West Palm Beach, Florida, U.S. March 28, 2023. REUTERS/Ricardo Arduengo 

A plane of former U.S. President Donald Trump is seen parked at the Palm Beach International Airport, in West Palm Beach, Florida, U.S. March 28, 2023. REUTERS/Ricardo Arduengo 

A plane of former U.S. President Donald Trump is seen parked at the Palm Beach International Airport, in West Palm Beach, Florida, U.S. March 28, 2023. REUTERS/Ricardo Arduengo 

A plane of former U.S. President Donald Trump is seen parked at the Palm Beach International Airport, in West Palm Beach, Florida, U.S. March 28, 2023. REUTERS/Ricardo Arduengo 

A plane of former U.S. President Donald Trump is seen parked at the Palm Beach International Airport, in West Palm Beach, Florida, U.S., March 28, 2023. REUTERS/Ricardo Arduengo 

A plane of former U.S. President Donald Trump is seen parked at the Palm Beach International Airport, in West Palm Beach, Florida, U.S. March 28, 2023. REUTERS/Ricardo Arduengo TPX IMAGES OF THE DAY 

A plane of former U.S. President Donald Trump is seen parked at the Palm Beach International Airport, in West Palm Beach, Florida, U.S. March 28, 2023. REUTERS/Ricardo Arduengo 

Ivorian migrants repatriated by the Ivorian state from Tunisia, after an outbreak of violence, sit during the registration at Felix Houphouet Boigny International Airport in Abidjan, Ivory Coast, March 27, 2023. REUTERS/Luc Gnago