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McConnell struggles to block trial witnesses

A senior administration official deeply involved in the White House impeachment strategy has told CBS News they are on "DEFCON 2" after Mr. Trump's lawyers wrapped his defense Tuesday. Mitch McConnell told colleagues he does not have the votes to block witness testimony as pressure on John Bolton to testify skyrockets. Nancy Cordes is on Capitol Hill with the next steps in the president's historic trial.
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