By Lindsey Mcpherson and Bridget Bowman and Michael Cades

The House returned Monday and the Senate returns Tuesday to begin the lame-duck session. In the House, Republican caucus leadership elections dominate the start of the week. House reporter Lindsey McPherson previews what to expect from Speaker Paul D. Ryan. And in the Senate, new senators report for orientation while the chambers legislative business is to be determined. Senate reporter Bridget Bowman has more.