Two federal appeals courts this week will hear claims that Donald Trump is violating the U.S. Constitution’s restrictions on presidents receiving gifts from domestic and foreign sources, provisions that were designed to limit outside influence in the White House.

The U.S. Court of Appeals for the D.C. Circuit on Monday will hear the case Blumenthal v. Trump, where Democrats in June 2017 sued the president. Then on Thursday, the Fourth Circuit, sitting en banc in Richmond, Virginia, will hear a case brought by the attorneys general for the District of Columbia and Maryland.