Mulvaney intervenes in action to block Congressional subpoena

Richard J. Leon

Michael Mulvaney

Acting White House Chief of Staff Michael Mulvaney has moved to intervene in the lawsuit brought by former Deputy National Security adviser Charles Kupperman.  The former Deputy NSC  Adviser seeks a declaratory judgment that presidential immunity protects him from responding to a Congressional subpoena (since withdrawn).  Despite the fact that the House of Representatives has "sole" impeachment power under the Constitution the Acting Chief of Staff has now moved to intervene saying he too should not have to respond to a Congressional subpoena.  
The matter is pending before District Judge Richard J. Leon.