Rep. Tom MacArthur resigned Tuesday as co-chairman of the caucus of GOP moderates known as the Tuesday Group in the wake of deep divisions among its members over the House Obamacare replacement bill he helped craft.

“You can’t lead people where they don’t want to go,” MacArthur said in an interview with POLITICO New Jersey Tuesday morning. “I think some people in the group just have a different view of what governing is.”

MacArthur announced his resignation as co-chairman moments ago during the group’s regular Tuesday meeting in Washington. He said he alerted House Speaker Paul Ryan on Monday.