Trump slams impeachment in angry letter to Pelosi; Giuliani says Trump "very supportive" of his political dirt-digging in Ukraine; Trump letter to Pelosi: "You have cheapened the importance of the very ugly word, impeachment";

Pelosi calls Trump's letter "ridiculous" and "really sick"; House panel setting rules for impeachment debate ahead of vote; On eve of impeachment vote, Pelosi tells Democrats "if we do not act, we will be derelict in our duty"; Trump letter to Pelosi protests impeachment, accuses Democrats of "open war on democracy"; Giuliani: "of course" I forced out "corrupt" U.S. Ambassador to Ukraine; FISA Court issues rare public order slamming FBI for mistakes in Russia probe warrants

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