The House of Representatives is expected to vote Tuesday on a civil contempt resolution against Attorney General William Barr and former White House counsel Don McGahn.
Here's what you need to know about what it means and how it came about:
Democrats vs. DOJ
Democrats, who control the majority in the House, want Barr to give them an unredacted copy of the report filed by former special counsel Robert Mueller on his Russia investigation.
They also want the underlying evidence that Mueller's office developed.