Senators Mitch McConnell and John Fetterman are set to return to the U.S. Capitol on Monday after extended absences due to medical issues. McConnell, the Senate Republican leader, suffered a concussion after a fall at a Washington-area hotel, while Fetterman sought treatment for clinical depression. The coming work period will shape the debate over the debt ceiling and other important issues, while questions remain over the illness of Sen. Dianne Feinstein, who was hospitalized with an undisclosed ailment last month.