Radio host Hugh Hewitt warned of trusting those who fervently oppose Donald Trump and those who believe the president can do no wrong.
Hewitt made his remarks in a column for The Washington Post on Monday.
"Do not trust the always-hate-Trump pundits," he said. "Do not trust the Trump-does-no-wrong pundits. Trust the people doing the hard work of putting together the puzzle of the past three years while at the same time keeping a cool, precise eye on the president's conduct.
"If you are a member of #TheResistance or a #NeverTrumper, it is doubtful you will allow yourself to see the enormous problem with the move toward show hearings in the House and a vote on articles of impeachment.
"If you are an #AlwaysTrumper, you will be in a position to persuade no one of the fact that an off-the-rails House is abusing the provisions of impeachment for purely partisan purpose."
He added: "Most of us in the group of 'sometimes Trumpers' have long records of criticizing the president on a host of issues, most recently the failure — twice — to respond to Iran's aggression with military strikes that would restore deterrence."
But Hewitt said the "sometimes Trumpers" know the president "has put scores of originalists on the federal bench who will defend the Constitution. We know that he has poured money into a depleted U.S. military."
And he warned: "The feeling of an illegitimate attempt at a coup dressed in constitutional clothing marks this latest turn as it never did the special counsel's investigation."