Jon Stewart returned to his old stomping grounds on Monday to make an impassioned plea to Congress.

Stewart, who left “The Daily Show” in August, called on Congress to renew the James Zadroga 9/11 Health and Compensation Act, which provided health benefits for 9/11 first responders.

Stewart rallied last week alongside firefighters, police officers and other first responders in an effort to get Congress to extend the benefits, which expired in October. He had visited Capitol Hill in September to push for an extension of the benefits.

“These first responders, many sick with cancers and pulmonary disease, have had to travel at their own expense to Washington, D.C., to plead for our government to do the right thing,” Stewart told “Daily Show” host Trevor Noah. “Plead!”

Stewart was especially critical of Senate Majority Leader Mitch McConnell (R). “Sen. Mitch McConnell of Kentucky doesn’t give a s– about anything but politics,” a visibly angry Stewart said.

As noted in Monday’s segment, Stewart was instrumental in getting the original bill passed — he hosted a panel of first responders on “The Daily Show” in 2010 in an appeal to lawmakers.

One of the first responders featured on that panel, Kenny Specht, a veteran of the New York City fire department, appeared on Monday’s show. “Seventy-five percent of the panel’s no longer here,” Specht told Stewart, adding that two of the panelists have illnesses, and another, operating engineer John Devlin, had since died.

Stewart urged “Daily Show” viewers to join his appeal on social media using the hashtag #WorstResponders.