Sen. Mitt Romney said Saturday that it's "very likely" that he'll be in favor of calling witnesses in the impeachment trial of President Donald Trump, but won't decide until after opening arguments. "I think it's very likely I'll be in favor of witnesses, but I haven't made a decision finally yet and I won't until the testimony is completed," the Utah Republican said, following the first day of the Trump team's opening arguments. Asked if he thought the defense team was effective, Romney replied, "I just don't have any comments on the process or the evidence until the trial is...