Sen. Mark Warner Mark Robert WarnerIntelligence chief says Congress will get some in-person election security briefings Overnight Defense: Trump hosts Israel, UAE, Bahrain for historic signing l Air Force reveals it secretly built and flew new fighter jet l Coronavirus creates delay in Pentagon research for alternative to 'forever chemicals' House approves bill to secure internet-connected federal devices against cyber threats MORE (D-Va.) says he would now back a ban on assault-style weapons.

“I don’t know how I can responsibly look at those young people and not say ‘We need to do something,’ ” Warner said Friday, according to The Virginian-Pilot in Norfolk, Va.

“We can debate around the edges where and what the perfect solution is. ... But it’s time for action.”

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Warner said the challenge in drafting legislation is that an "assault weapon, in the law, is a kind of a vague term."

"You change the trigger, you change the sight, and some weapons are in, some weapons are out. There’s not going to be a perfect solution,” he said.

“But the notion that just because it’s hard we shouldn’t do it — I just don’t think we can sit through more of the mass murders and not take action.”

Warner was among a handful of Senate Democrats who voted against a ban on assault-style weapons in 2013 following the deadly mass shooting at Sandy Hook Elementary School in Newtown, Conn.

Last month, he signaled a potential shift on his position on the issue, saying it was time to "change our positions and re-examine them."

Gun control has become a central issue in the country since a gunman opened fire in February at a high school in Parkland, Fla., killing 17 people.

Since the shooting, students have become vocal advocates for gun control, demanding that lawmakers pass new gun laws to prevent future school shootings.

Last month, hundreds of thousands of people marched in cities across the country to protest gun violence and call for action.