Senator John Fetterman, a Democrat from Pennsylvania, drew criticism for wearing casual clothes to preside over the Senate last week.

Fetterman, who started his first term in the Senate this year by wearing a suit and tie in accordance with rules in the upper chamber, returned to his trademark basketball shorts and hoodies after he was hospitalized earlier this year with clinical depression. The freshman lawmaker presided over the Senate in a short-sleeve button-down shirt on Wednesday after Senate Majority Leader Chuck Schumer, a Democrat from New York, relaxed dress code rules.

“If those jagoffs in the House stop trying to shut our government down, and fully support Ukraine, then I will save democracy by wearing a suit on the Senate floor,” he vowed on social media in reaction to renewed federal funding controversies.

Fetterman was previously forced to vote from the doorway of the Democratic coatroom rather than the Senate floor before the rule was amended. Republican members of the Senate sent a letter of rebuke to Schumer for failing to “understand the seriousness our positions require.”

“The Senate is a place of honor and tradition, and the Senate floor is where we conduct the business of the American people,” the forty-six Republicans wrote. “Allowing casual clothing on the Senate floor disrespects the institution we serve and the American families we represent.”

Fetterman has been immersed in controversy during his first term: he suffered a stroke last year while running for his current Senate seat, nevertheless winning both the Democratic primary and the general election. He was treated for depression for six weeks in February and March.

The lawmaker, who previously served as lieutenant governor of Pennsylvania and faced criticism for lackluster productivity, has missed one-third of roll call votes in the Senate.