A top Democrat on the House Oversight and Government Reform Committee on Tuesday demanded that Republicans on the committee subpoena the Trump administration in order to get documents that he said reveal its collaboration with an anti-abortion group to fight Planned Parenthood.

Rep. Elijah Cummings, D-Md., asked committee chairman Trey Gowdy, R-S.C., on Tuesday to subpoena the Health and Human Services for the documents. The request is related to a whistleblower who told Cummings an anti-abortion law group called Alliance for Defending Freedom played a role in rescinding federal guidance that made it harder for states to defund Planned Parenthood.