It became obvious this week, through the release of the Bruce Ohr and Lisa Page transcripts, that RussiaGate was birthed entirely by persons in the employ of Hillary Clintion, with then CIA Director John Brennan as midwife, and the DOJ / FBI avidly assisting — all of them fully aware that the predicate was false. What's more, the evidence timeline makes it clear that Democratic Party leadership, including Nancy Pelosi, knew it was false. Hence, the pained smile she's been wearing these many months.
In the event of an impeachment proceeding in the House, all that would be revealed, especially if it got as far as a trial in the US Senate, where the defense is allowed to mount a case under rules of evidence. Imagine the howls of embarrassment on late-night TV when even ex-comedian Stephen Colbert would have to admit that he was gulled into acting as a shill for a seditious con.