“The 115th Congress took office in January and set to work on an agenda that includes confirming President Donald Trump’s Cabinet nominees, addressing illegal immigration and repealing and replacing the 2010 health care law signed by Barack Obama. Republicans now control both chambers of Congress and the White House for the first time since 2007, when George W. Bush was president. Apart from its political makeup and policy objectives, the new Congress differs from prior ones in other ways, including its demographics. Here are five charts that show how Congress has changed over the long term, using historical data from CQ Roll Call, the Brookings Institution, the Congressional Research Service and other sources…”