President Trump on Thursday threw his support behind future efforts by Congress, though not a current one, to change the federal law granting the president authority to declare national emergencies.

“Prominent legal scholars agree that our actions to address the National Emergency at the Southern Border and to protect the American people are both CONSTITUTIONAL and EXPRESSLY authorized by Congress,” Trump said in a pair of tweets. “If, at a later date, Congress wants to update the law, I will support those efforts, but today’s issue is BORDER SECURITY and Crime!!! Don’t vote with Pelosi!”