WASHINGTON — After White House chief of staff John Kelly pressured President Trump last fall to install his top deputy, Kirstjen Nielsen, atop the Department of Homeland Security, the president lost his temper when conservative allies argued she wasn’t sufficiently hardline on immigration. ‘‘You didn’t tell me she was a [expletive] George W. Bush person,’’ Trump growled.

After Kelly told Fox News Channel’s Bret Baier in a January interview that Trump’s immigration views had not been ‘‘fully informed’’ during the campaign and had since ‘‘evolved,’’ the president berated Kelly in the Oval Office, his shouts so loud they could be heard through the doors.

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