October 4 House panel subpoenas White House for documents on Trump pressing Ukraine for political help, in escalation of clash
October 4 House Democrats request Ukraine documents from Vice President Pence for impeachment inquiry
October 2 House Democrats say they will subpoena White House for Ukraine documents, citing ‘flagrant disregard’ of requests
September 30 Rep. Chris Collins of New York is resigning from Congress ahead of expected guilty plea, Speaker Pelosi’s office says
