One Senate Democrat has pledged to talk for as long as physically possible on the Senate floor to compel his colleagues to pass gun control measures, in response to the most deadly mass shooting in our country’s history.

“I’m prepared to stand on this floor and talk about the need for this body to come together on keeping terrorists away from getting guns … for frankly as long as I can,” said Senator Chris Murphy (D-CT) at around 11:20 a.m. on the Senate Floor.

Murphy began speaking during a debate on a commerce, justice, and science spending bill, and looks to add amendments that would require universal background checks and prevent people on the no-fly list from purchasing guns. As long as Murphy and his colleagues have the rights to the floor, no one can vote or offer amendments to the bill.

“Our hope is by holding up the CJS bill, we will prompt debate and will provide an impetus for our sides to come together and find common ground,” Murphy said.

Many of his Democratic colleagues, like fellow Connecticut Senator Richard Blumenthal, Bill Nelson (D-FL), Dick Durbin (D-IL), Chuck Schumer (D-NY), Patty Murray (D-WA), Patrick Leahy (D-VT), Cory Booker (D-NJ), Ben Cardin (D-MD), and Joe Manchin (D-WV), are asking him questions to help eat up time. (Local Virginia Congressman Don Beyer said he was with Murphy and Senate Dems.)

Republican senators are asking questions, too. Ben Sasse of Nebraska asked Murphy about what the terrorist watchlist is and how a person gets on it, according to Politico. “It’s time to get something done here,” said Pat Toomey (R-PA), though he also had concerns about using the watchlist to determine who is a terrorist. (This guidebook published by The Intercept illustrates how people end up on that list.)

A spokesperson for Everytown for Gun Safety, the gun control advocacy group founded by former NYC Mayor Michael Bloomberg, told Politico that it was working with Toomey on legislation to prevent terrorists from getting guns.

The Connecticut delegation, which represents the state where the deadly shooting at Sandy Hook Elementary School occurred, has been outspoken about Congress’ lack of action on gun control.

Murphy said earlier this week, in response to the Orlando shooting, that “Congress has become complicit in these murders by its total, unconscionable deafening silence.”

His colleague on the House side, Congressman Jim Himes, launched a walkout of Speaker Paul Ryan’s moment of silence for the Orlando nightclub shooting that also included two other Constitution State representatives. In an op-ed for The Washington Post, Himes called moments of silence “a tepid, self-satisfying emblem of impotence and willful negligence.”