The White House suspended the media credentials of CNN reporter Jim Acosta on Wednesday night, citing his “absolutely unacceptable” conduct for tussling with a White House intern at a presidential press conference earlier in the day.

Mr. Acosta learned of the move when a Secret Service officer confiscated his White House credentials, known as a “hard pass,” as he tried to re-enter a security gate at the White House.

Mr. Acosta said later on CNN that he believes the White House is punishing him for asking tough questions.

“This is a test,” Mr. Acosta said. “I do think they’re trying to shut us down, to some extent.”

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