A newly sworn-in U.S. citizen holds a U.S. flag and documents during a naturalization ceremony in 2018 at the John F. Kennedy Presidential Library and Museum in Boston.

A newly sworn-in U.S. citizen holds a U.S. flag and documents during a naturalization ceremony in 2018 at the John F. Kennedy Presidential Library and Museum in Boston.

A newly sworn-in U.S. citizen holds a U.S. flag and documents during a naturalization ceremony in 2018 at the John F. Kennedy Presidential Library and Museum in Boston.

A newly sworn-in U.S. citizen holds a U.S. flag and documents during a naturalization ceremony in 2018 at the John F. Kennedy Presidential Library and Museum in Boston