>> if it ends up in the senate we don't need jurors to start brainstorming witness lists for the prosecution and demanding to lock them in before we even heard opening arguments. >> reporter: despite the president's fury he allowed his aides shout over our follow up questions. president sounded hopeful that the senate would hold a vote on his new trade deal with canada and mexico before an impeachment trial but that may be wishful thinking. if it's delayed, president won't take the blame for that either. as for the latter it comes across more like a campaign speech or a six page tweet than a letter coming from the white house. it is filled with his grievances against democrats excusing pelosi of viewing democracy as her enemy. that's also in this letter. missing from the letter is any indication that the president takes any responsibility in anyway for his actions. >> very scathing letter. let's go to the white house,