president from office. >> president trump has acted in a manner grossly incompatible with self-governance. >> reporter: lead impeachment manager adam schiff launched his opening arguments by honing in in a three-day period from last summer. >> that alone is grounds for removal from office of the 45th president. >> reporter: it started, he said, on july 24, the day special counsel robert mueller testified about his two-year investigation into russian election interference. >> did you aually totally exonerate the president? >> no. >> reporter: one day later, president trump asked the ukrainian president to do him a favor and investigate his campaign rival, joe biden. >> the very next day, he's on the phone, president trump is on the phone with a different foreign power-- this time ukraine-- trying to get ukraine o interfere in the next election. >> reporter: the next day, president trump brought it up