McConnell struggles to maintain GOP unity post-Bolton

Senate Majority Leader Mitch McConnell (R-Ky.) is struggling to maintain control of President Trump’s impeachment trial following news of former national security adviser John Bolton’s bombshell manuscript.

McConnell on Monday deflected growing calls, including from fellow GOP senators, to allow testimony from Bolton and other potential witnesses, which could prolong the trial and deal a massive blow to Trump and Republicans.

Senate debate over whether to call additional witnesses was upended Sunday following a New York Times report revealing that Bolton claims in a draft of his forthcoming book...