More than 190 Democrats in Congress have joined together to sue President Trump on Wednesday in U.S. District Court in Washington, D.C.

They say Trump is violating the U.S. Constitution by profiting from business deals involving foreign governments — and doing so without congressional consent. And they want the court to make it stop.

Trump has “repeatedly and flagrantly violated” the Constitution’s Emoluments Clause, Sen. Richard Blumenthal, D-Conn., told reporters on a conference call.