The independent Michigan congressman joined several Republican lawmakers in blasting the strike on Iranian general Qassem Soleimani without Congress' approval.
Sarah Huckabee Sanders spoke about the president's authority after the raid on his lawyer's office.
The president made the comments ahead of his visit to the FBI.
The president can take action against an actual or imminent threat, but none exists so far, according to the New York City Bar Association.
A new study confirms what psychologist Stanley Milgram showed more than 50 years ago: the disturbing extent to which people will obey orders even when those orders cause pain in others.
Imran Khan threatens protests against the Pakistan prime minister due to revelations in the Panama Papers scandal.
The more kids obey silly instructions from teachers, the more vulnerable they will be to authority figures later in life.