Cortez, a Bronx Democrat, went a step further and said that Trump's military actions without congressional authorization were "absolutely and clearly grounds for impeachment." Those assertions have reignited a decades-old debate about the limits of the president's authority over the use of military force.

Few people inside the administration knew the president was moving forward with plans for the attack, even late last week.

Iran said Monday that the number of missiles fired matched the number of bombs dropped by the U.S. over the weekend.