The crux of the House case is the allegation that Trump withheld military aid and a White House meeting to pressure Ukraine to investigate former vice president Joe Biden, a political rival, as well as his son Hunter Biden.
●Senate adopts ground rules for impeachment trial, delaying a decision on witnesses until after much of the proceedings.
●Chief Justice John G. Roberts Jr. admonishes impeachment lawyers, telling them to “remember where they are.”
●Senate Democrats privately consider witness trade in impeachment trial.
●With his mind on impeachment, Trump prepares to wrap up Davos visit with foreign policy focus.