A Republican intraparty clash broke out on social media between Sens. John Cornyn (R-TX) and Mike Lee (R-UT) over the SAVE Act, with Cornyn arguing the bill lacks the votes to advance and warning that GOP infighting is damaging the party’s political prospects.

Cornyn, who is serving his final months in the Senate after losing his Texas primary to Trump-backed Texas Attorney General Ken Paxton, has increasingly used his platform to criticize party strategy and leadership.