“Last night, in a bizarre spectacle, Senator Schumer exploded in a rant that was so partisan, angry, and corrosive that even Democratic Senators were visibly embarrassed by him and for him. This tantrum encapsulated and escalated a pattern of angry incompetence from Senator Schumer,” McConnell wrote.

McConnell warned that Schumer’s “childish behavior” had “alienated” GOP senators who helped advance the short-term debt increase and “poisoned the well even further.” They are likely the same GOP senators Schumer would need to lean on to raise the debt ceiling outside of reconciliation later this year.

“I am writing to make it clear that in light of Senator Schumer’s hysterics and my grave concerns about the ways that another vast, reckless, partisan spending bill would hurt Americans and help China, I will not be a party to any future effort to mitigate the consequences of Democratic mismanagement,” he added.