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.

A Washington Post poll shows a significant surge in Republican support following Trump’s airstrikes in Iran over its nuclear program.