Republicans are still in the majority so if they are pressed on Bolton they should add both Bidens, the whistleblower, Schiff and his staff guy Misko who is the whistleblowers friend who prepped the whistlelowers complaint and force the Senate to vote on the entire package of witnesses. Bet you the Dems back away because it will hurt them in congressional elections if they are seen backing corruptive influence peddling to try to impeach the President and folks like Romney and Collins will have to vote with the Republicans for the entire package.
They wont because Republicans in the Senate are spineless wimps. If someone from Obama’s cabinet had written a book saying that Obama did something illegal the Dems would say “This is just a disgruntled ex employee” and that would be the end of it. Notice the difference, under Obama, I hated his guts but his people were loyal to him, they would slit their own throats before they say ONE bad word about him..with Trump, they cant wait to trash him, the second they have the chance