Secretary of State Mike Pompeo said on Saturday that US officials should either support President Donald Trump or quit after a report that the Justice Department's Number Two discussed ways to remove Trump over mental incompetence.

The New York Times reported last week that deputy attorney general Rod Rosenstein had suggested secretly recording Trump to set the stage for pursuing the US Constitution's 25th Amendment, which provides for the cabinet and then Congress to force out a president who is incapable of discharging duties. Asked whether he had heard talk of wiretapping or invoking the 25th Amendment, Pompeo told "Fox News Sunday" in an interview: