WASHINGTON — Several members of Congress in both parties Saturday questioned the legality of President Donald Trump’s move to launch military strikes on Iran.

While Republican leaders and many rank-and-file members stood by Trump’s decision to bomb Iran’s major nuclear enrichment facilities, at least two GOP lawmakers joined Democrats across the party spectrum in suggesting it was unconstitutional for him to bomb Iran without approval from Congress.

“While President Trump’s decision may prove just, it’s hard to conceive a rationale that’s Constitutional,” Rep. Warren Davidson, R-Ohio, who usually aligns with Trump, said on X. “I look forward to his remarks tonight.”

Rep. Thomas Massie, R-Ky., said in response to Trump’s social media post announcing the strikes: “This is not Constitutional.”

Massie introduced a bipartisan resolution this week seeking to block U.S. military action against Iran “unless explicitly authorized by a declaration of war or specific authorization for use of military force against Iran” passed by Congress.