Up for debate during the March 2 oral arguments was whether the federal government can use the Gun Control Act to prohibit the ownership of firearms by those who use controlled substances.

The NRA had declined to send representatives to a town hall meeting Obama held on gun control earlier in January, referring to it as a "public relations spectacle," according to USA Today.

Republicans candidates rejected the proposals, including those who have backed some gun control measures in the past. "This president is a petulant child," New Jersey Gov. Chris Christie said Sunday on "Fox News Sunday."

In another push for tighter gun control measures to be enacted, Democrats held a sit-in on the House Floor on June 22.

Arizona Sheriff Paul Babeu, who is known for his anti-immigration stance and is seeking the Republican nomination for Arizona's 1st District seat in Congress, went after Obama on gun control.

Obama's 10-point plan to keep guns from those who shouldn't have them marked a concession by the president: He'll leave office without securing the new gun control laws he's repeatedly and desperately implored Congress to pass.

Gabby Giffords, who was badly wounded in a 2011 shooting, also has raised millions to promote gun control measures.

—A New Brunswick man whose young daughter was gunned down in a robbery 29 years ago is calling for a renewed debate on firearm control and the federal long-gun registry.

—Just days after a deadly shooting in Oregon, Hillary Rodham Clinton will unveil new gun control measures on Monday aimed at strengthening background checks on gun buyers and eliminating legal immunity for sellers.

Up for debate during the March 2 oral arguments was whether the federal government can use the Gun Control Act to prohibit the ownership of firearms by those who use controlled substances.

John Lewis (D-GA) Democrats have maintained control of the House chamber since this morning demanding a vote on gun control legislation.

"I generally oppose gun control, but I support the ban on assault weapons and I also support a slightly longer waiting period to purchase a gun," he wrote then.

Despite her words, many Democrats see gun control as a losing issue and don't want to touch it. Obama pointed to lax gun controls in his response but glumly acknowledged there was no way he could prod Congress to take action on gun violence.

The president is pleading for action, and significant majorities of Americans support changes in gun control laws, particularly more rigorous background checks but also bans on assault weapons.

Actor Kurt Russell advocated against gun control laws in a recent interview to promote his new movie.

He worked for gun control. Handgun Control Inc. was renamed The Brady Campaign to Prevent Gun Violence in his honor.

Taya Kyle used the opportunity to address Obama's recent executive actions on gun control, telling him: "The thing is that the laws that we create don't stop these horrific things from happening, right? And that's a very tough pill to swallow."

The NAACP is calling for increased gun control measures following the slaying of two New York City Police Department officers on Saturday.

President Joe Biden has called for a number of stricter gun control measures, including prohibiting online gun sales and incentivizing states to introduce “red flag” laws and gun-licensing regimes.

—New York's landmark gun control law opened a political fissure that's still visible upstate. Polls have shown majority support for the SAFE Act spearheaded by Gov.

A screaming officer grapples in the half-dark for control of a handgun with the occupant of an SUV. The occupant then grabs at officer's radio to stop her from calling for backup and then he reaches for a second gun.

President Barack Obama took two executive actions on gun control on Aug. 29, four months after the Senate failed to restrict gun sales in response to a December 2012 massacre at an elementary school in Newtown, Conn.

President Barack Obama addresses gun control issues during a speech at the Denver Police Academy on April 3, 2013, in Denver, Colo. Obama commended Colorado's newly passed gun control laws.

Supporters of gun control legislation carry it out in other towns and cities across America, part of a bus tour organized by Mayors Against Illegal Guns. 

John Lott, founder of the Crime Prevention Research Center, and author of a number of books on guns and gun control, including most recently, “Gun Control Myths.”

Gun control has been a hot topic in the  news in recent years, and even more so since the Sandy Hook massacre. Should gun ownership be limited? How? Can guns be restricted without violating the constitution?  

Gabrielle Giffords on Wednesday said she is “furious” over the failed gun control initiative in the U.S. Senate.

Gun control organizations did not respond to requests for comment by publication. However, their websites list their concerns, which include the dismantling of Biden’s gun control agenda.

"The debate should not be about controlling guns but controlling people who cannot control themselves," said Grassley at the March 7 meeting.

Siegel said the project is unprecedented in the gun debate. The 23 members included lawyers, veterans of the gun control and gun rights movements, gun dealers, religious leaders, health care workers, and military veterans.