The Johnson years (1965-68): a remarkable time to begin in Congress
The Nixon years (1969-74): accomplishments amid turmoil
The Ford years (1974-76): a needed respite
The Carter years (1977-80): intraparty discord
The Reagan years (1981-88): letting the democratic process work
The George H. W. Bush years (1989-92): a new world order
The Clinton years (1993-2000): opportunities missed
The George W. Bush years (2001-2008): a timid Congress
The Obama years (2009-14): continuing struggles
Some concluding thoughts.