Lawmakers continued to butt heads on President Trump's border wall, immigration, background checks for firearm purchases and other key points.
The Justice Department submitted a proposal that would bar the possession, sale and manufacturing of the gun accessory.
L.L. Bean said in a tweet Thursday that it will no longer sell guns or ammunition to anyone under age 21.
Walmart stopped selling high-powered semi-automatic rifles with high-capacity magazine capabilities in 2015.
Trump pushed for a single piece of legislation to cover the gun-related proposals.
After the deadly school shooting in Parkland, Florida, Dick's Sporting Goods says it will no longer sell assault-style rifles.
The state Senate is advancing a similar bill.
That could put President Trump at odds with the NRA, which donated more than $11 million to support his presidential bid.
He also repeated the NRA refrain, "To stop a bad guy with a gun, it takes a good guy with a gun."
President Donald Trump brought up the idea Wednesday during a listening session with those affected by school shootings.
After speaking out about gun control over the weekend, Ohio Gov. John Kasich changed the Second Amendment portion of his website.
Gun purchases and gun company stocks spike after prominent mass shootings, researchers find.