Paul's filibuster on drones earlier this month lasted nearly 13 hours. | AP Photos Paul, Cruz threaten filibuster on guns

Sens. Rand Paul, Ted Cruz and Mike Lee are threatening to filibuster gun-control legislation, according to a letter they plan to hand-deliver to Senate Majority Leader Harry Reid’s office on Tuesday.

“We will oppose the motion to proceed to any legislation that will serve as a vehicle for any additional gun restrictions,” the three conservatives wrote in a copy of the signed letter obtained by POLITICO.


Reid plans to bring up a gun-control measure that focuses on broadening background checks and cracking down on interstate gun-trafficking after the current Senate recess.

Conservatives are concerned that once that bill reaches the floor, amendments could stiffen restrictions on gun control.

Moreover, they understand that Reid intends to allow liberal amendments that would limit clip capacity and ban certain assault weapons to be offered — even though they would be defeated — to give Democrats a chance to vote on them. For moderate Democrats in competitive states, that amounts to an opportunity to vote no and show allegiance to gun rights.

Though they don’t use the word “filibuster” in the letter, the conservatives are leaving no doubt that they would filibuster on an initial procedural question — the motion to proceed.

Lee staged a test vote on the issue during consideration of the Senate budget last week. He tried to amend a point of order against gun control legislation to the budget but fell short. It needed a three-fifths supermajority and failed 50-49, needing 60 votes to pass. But the final tally emboldened Lee, Paul and Cruz because they were so close to a majority and a filibuster takes just 41 votes to sustain.