Rudy Giuliani has said he will not be on Donald Trump's legal team for the upcoming Senate impeachment trial - a day after claiming he would be spearheading the president's defense. Speaking to ABC News on Sunday night, the former mayor of New York said: 'Because I gave an earlier speech [at the January 6 Trump rally], I am a witness and therefore unable to participate in court or Senate chamber.' During the speech, Giuliani had instructed supporters to engage in 'trial by combat' moments before they stormed the Capitol - comments which have left him facing his own potential...