Vietnamese immigrant Tai Phu waits in line to pick up his U.S. citizenship certificate at a naturalization ceremony at the Los Angeles Convention Center, Wednesday, Feb. 15, 2017, in Los Angeles. About 3,000 people took the oath in the morning and more than 3,500 others were expected during an afternoon ceremony, according to U.S. Citizenship and Immigration Services officials.(AP Photo/Jae C. Hong)
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