Hasan Piker, an influential left-wing personality, said he was detained and questioned by U.S. Customs and Border Protection over the weekend.

Mr. Piker, who was born in the United States, said he was passing through Global Entry, a U.S. Customs and Border Protection program that eases security checks for travelers deemed to be low-risk, when an agent asked him to step aside.

Hasan Piker said he was detained and questioned by federal authorities at Chicago's O'Hare International Airport following a trip to Paris.