The Senate voted decidedly in favor of a motion supporting NATO on Tuesday while President Donald Trump heads into the European summit, spouting off insults and accusations at America’s allies.

According to a Tuesday Hill report, Sens. Mike Lee (R-UT) and Rand Paul (R-KY) were the only lawmakers to vote against the nonbinding motion.

The motion was proposed by Sen. Jack Reed (D-RI), who called America’s commitment to NATO “ironclad.”

Trump has been sounding off on his many perceived grievances with NATO as he begins the summit, taking issue with a defense spending agreement he does not understand and complaining that Americans are taking on a lopsided burden within the alliance. He has also angered some of the U.S.’ closest allies by levying steep tariffs.