Sen. Rick Scott (R-FL) rekindled his feud with Mitch McConnell (R-KY) on Tuesday with an op-ed accusing the Senate minority leader of “undermining” the Republican Party with a border compromise that has been panned by conservatives.

Scott, who unsuccessfully challenged McConnell for his leadership role last February and has been a thorn in his side ever since, criticized the Senate GOP leader in an editorial for the Hill over his support for the proposed border deal, which would be paired with funding for Ukraine.

McConnell, Ukraine’s staunchest GOP ally since Russia launched its war, has said he supports the supplemental as long as it includes “credible” border policy changes. That has put him at odds, however, with former President Donald Trump, who has come out against the border deal.

“Trump and House and Senate conservatives represent the views and beliefs of Republican voters,” Scott wrote. “Mitch McConnell and the Washington establishment don’t. They have undermined Republican voters for years, and the voters have said enough.”