(CNN) – Republicans threatening a filibuster on new gun laws are woefully stuck in another era, Vice President Joe Biden told an audience of law enforcement officers Tuesday.
"I am so convinced that those folks who are trying to stop any action are in a time warp," he said, adding the issue of bolstering background checks on gun sales "has moved beyond where it was five, ten, even three years ago."
More than a dozen GOP lawmakers – including Senate Minority Leader Mitch McConnell - have said they plan to block a vote on ramping up background checks in the Senate, though other Republicans say they oppose the attempts to stall the bill from proceeding.
On Tuesday, Senate Majority Leader Harry Reid said a vote to open debate on tougher gun laws would come Thursday. It would require 60 votes to pass.
The mere optics of preventing a vote on new gun laws in the aftermath of a tragedy was "embarrassing," Biden asserted Tuesday,
"As of now, you got leading senators, the most august legislative body in the world, are saying we're not even going to talk about this? A tragedy that traumatized a nation and caught the attention of the entire world … and the climax of this tragedy could be we're not even going to get a vote? Imagine how this makes us look," Biden said.
"At the end of the day, I can't believe that it will actually happen, that they will follow the lead of the minority leader and the 13 or whatever the number of people is," he said later. "I know too many people on that side of the aisle. I just can't – I just don't believe they'll do this."
One proposal being considered would expand background checks to gun shows and internet sales, but would not require checks for any other private transactions, according to multiple sources from both parties who are familiar with the talks. That falls short of the universal background checks favored by Biden and President Barack Obama.
The powerful National Rifle Association is staunchly opposed to the bill, yet recent polls show an overwhelming majority of Americans favor making a change to the background check system.
"The public is so far beyond where the Congress is," Biden said Tuesday. "So far ahead of the way they're talking. They don't understand. They really don't understand."
The vice president charged the NRA with "engaging in a campaign which I am not unaccustomed to, of disinformation, to try to scare people," adding that claims the new laws would force sellers or the government to keep records on gun buyers were false.
"It doesn't violate anyone's Constitutional right," Biden said. "It doesn't have any impact on your Second Amendment right. It just doesn't do anything that's not already being done. Nothing. Not a thing."