Sen. Mark Warner, the top Intel Democrat, says that it's time for Republicans to step up and protect the Mueller investigation with Rod Rosenstein's fate hanging in the balance

"I think there's broad bipartisan support to protect the Mueller investigation. That ought to be passed right away," Warner told reporters

"There's been a lot of my Republican colleagues along the way who have said if the time comes, they'll step up. We'll see later this week if that time comes along," he added.

"You've got the potential, even if Mueller's not fired, for his budget to be cut back, his investigatory activities to be cut back."