Ron Paul said Monday that President Barack Obama’s targeted killing of Anwar al-Awlaki might be an impeachable offense.

Asked at a Manchester, N.H. town hall meeting about last week’s killing of the American-born Al Qaeda leader, the Texas congressman said impeachment would be “possible,” but that he wants to know more about how the administration “flouted the law.”

Paul called the killing a movement toward “tyranny.”

“I put responsibility on the president because this is obviously a step in the wrong direction,” Paul said. “We have just totally disrespected the Constitution.”

The comments once again put Paul at odds with his Republican rivals over foreign policy and the war on terror in the latest indication of how his foreign policy views stray far from Republican orthodoxy even in a GOP that’s taken on an increasingly isolationist bent.

Asked on what crime or offense he would impeach Obama on, Paul responded: "I just said almost every president I've known I'd probably have to vote for impeachment, because there's very little respect for the Constitution –– and certainly there's no respect for the Constitution for assassinating American citizens."