Senate Majority Leader Mitch McConnell said Tuesday that there are enough Republican votes to invoke the “nuclear option” and seat Judge Neil Gorsuch on the Supreme Court by changing Senate precedent to end the filibuster for high court nominees.

Despite McConnell’s claim, several GOP senators left a closed-door lunch meeting grumbling about their leader’s decision to move forward with the plan to seat Gorsuch in the face of a Democratic filibuster.