Becoming American

New citizens smile at a U.S. Citizenship and Immigration Services (USCIS) naturalization ceremony at the New York Public Library in Manhattan, July 3, 2018. REUTERS/Shannon Stapleton

Immigrants participate in a naturalization ceremony to become new U.S. citizens in Los Angeles, March 20, 2018. REUTERS/Lucy Nicholson

Martha Vega, 55, from Mexico (C) participates in a naturalization ceremony to become a U.S. citizen after living in the U.S. for 40 years, in Los Angeles, December 19, 2018. REUTERS/Lucy Nicholson

Ike Khajeek, 2, plays with a U.S. flag as she waits for her mother from Iraq to be sworn in as a new U.S. citizen at a naturalization ceremony in Los Angeles, December 19, 2018. REUTERS/Lucy Nicholson

Immigrants participate in a naturalization ceremony to become U.S. citizens in Los Angeles, December 19, 2018. REUTERS/Lucy Nicholson

Immigrants participate in a naturalization ceremony to become new U.S. citizens in Los Angeles, March 20, 2018. REUTERS/Lucy Nicholson

Stallone Laurel Dias, originally from India and a soldier in the U.S. Army, recites the U.S. Pledge of Allegiance after taking the oath to become a U.S. citizen during a ceremony at the John F. Kennedy Presidential Library in Boston, July 18, 2018....more

U.S. President Donald Trump is seen on a video screen during a U.S. Citizenship and Immigration Services (USCIS) naturalization ceremony at the New York Public Library in Manhattan, July 3, 2018. REUTERS/Shannon Stapleton

Detroit Tigers shortstop Jose Iglesias (center left) and center fielder Leonys Martin (center right) take the Oath of Allegiance to become United States citizens during a naturalization ceremony before a game against the Oakland Athletics at Comerica...more

New citizens stand during the Pledge of Allegiance at a U.S. Citizenship and Immigration Services (USCIS) naturalization ceremony at the New York Historical Society Museum and Library in Manhattan, April 10, 2017. REUTERS/Shannon Stapleton

Immigrants participate in a naturalization ceremony to become new U.S. citizens in Los Angeles, March 20, 2018. REUTERS/Lucy Nicholson

Immigrants participate in a naturalization ceremony to become new U.S. citizens in Los Angeles, March 20, 2018. REUTERS/Lucy Nicholson

People participate in a naturalization ceremony for immigrants to become new U.S. citizens in Los Angeles, March 20, 2018. REUTERS/Lucy Nicholson

Immigrants participate in a naturalization ceremony to become U.S. citizens in Los Angeles, December 19, 2018. REUTERS/Lucy Nicholson

New citizens stand during the Pledge of Allegiance at the U.S. Citizenship and Immigration Services (USCIS) naturalization ceremony at the New York Public Library in Manhattan, July 3, 2018. REUTERS/Shannon Stapleton