AP Photo/Evan Vucci
President Donald Trump talks to House Speaker Paul Ryan at the White House on May 4, 2017, after the House passed a healthcare bill.
Republicans have enjoyed majorities in both houses of Congress since 2014, but many of their key initiatives - deregulation, antiabortion policies, states rights - have stalled in the past because the executive branch was under Democratic control.Then President Donald Trump's victory brought new energy to Republican efforts to reshape federal government.
Since Trump took office in January, he and Congress have taken a number of steps to rollback regulations that former President Barack Obama put in place.
The Washington Post put together a database tracking the erosion of Obama's legacy.