When President Donald Trump recently launched missile strikes against Iran, the negative response from Democrats had little to do with the merits of the attack itself. Instead, many Democrats criticized the president for not getting authorization from Congress.

Several called Trump’s actions “illegal,” and others said it was “unconstitutional.” At least two House Democrats, Reps. Alexandra Ocasio-Cortez (D-NY) and Sean Casten (D-IL) said it was grounds for impeachment. Republicans largely supported Trump’s action, though several, including Reps. Marjorie Taylor Greene (R-GA) and Thomas Massie (R-KY) were critical of the move.