For the first time, the impeachment inquiry reached directly into the White House on Friday as Democrats subpoenaed officials about contacts with Ukraine. "We deeply regret that President Trump has put us—and the nation—in this position, but his actions have left us with no choice," wrote the three Democratic House chairmen, Reps. Elijah Cummings, Adam Schiff, and Eliot Engel, in issuing Friday's subpoena after White House resistance to the panel's request for witnesses and documents, per the AP. Fighting the inquiry, the White House was expected to send a letter to House Speaker Nancy Pelosi arguing that Congress couldn't mount its impeachment investigation without first having a vote to authorize it. But Pelosi insists the House is well within its rules. In the letter accompanying the subpoena, the three chairmen agreed: "Speaker Pelosi has confirmed that an impeachment inquiry is underway, and it is not for the White House to say otherwise." Democrats have already sent a separate extensive request for documents to Vice President Mike Pence about his own contacts with Ukraine. More that's swirling: