Axios reports:
There may be enough new pressure on Senate Republicans to allow witnesses at President Trump’s impeachment trial, after the leak from a forthcoming book by former national security adviser John Bolton that contradicts what the White House has been telling the country.
Republican sources tell Axios that party leaders and the White House will still try to resist witnesses because, as one top aide put it, “there is a sense in the Senate that if one witness is allowed, the floodgates are open.”
“If [Bolton] says stuff that implicates, say Mick [Mulvaney] or [Mike] Pompeo, then calls for them will intensify,” the aide said.