WASHINGTON – Polite yet firm, Senate Republicans told President Barack Obama on Thursday to tone down his political attacks and prod Democratic allies to support controversial changes in Medicare if he wants a compromise reducing deficits and providing stability to federal benefit programs.

Participants at a 90-minute closed-door meeting said Obama acknowledged the point without yielding ground – and noted that Republicans criticize him freely. “To quote an old Chicago politician, ‘Politics ain’t beanbag,’ ” the president said.

The discussion came as Obama wrapped up a highly publicized round of meetings with rank-and-file lawmakers in both parties and both houses of Congress in hopes of building support for a second-term agenda of deficit reduction, immigration overhaul and gun control.