Gun control after the Sandy Hook Elementary School shooting

[7] That afternoon, President Barack Obama made a televised statement offering condolences on behalf of the nation to Connecticut governor, Dannel Malloy and saying, "we're going to have to come together and take meaningful action to prevent more tragedies like this, regardless of the politics.

[11] While public support for strengthening gun laws rose 15 percent compared to a similar poll in 2011, there had been "little change in attitudes about some longstanding proposals, including the outlawing of assault rifles."

On January 16, 2013, President Obama announced a plan for reducing gun violence in four parts: closing background check loopholes; banning assault weapons and high-capacity magazines; making schools safer; and increasing access to mental health services.

[17][20] On December 21, 2012 – between the formation of Biden's task force and the announcement of Obama's proposals – Wayne LaPierre, executive vice president of the National Rifle Association (NRA), expressed the gun-rights group's sympathy for the families of Newtown.

[22] On January 8, 2013, former Congresswoman Gabby Giffords, who was shot and injured in a 2011 shooting in Tucson, launched Americans for Responsible Solutions to raise money for gun control efforts to counter the influence of powerful pro-gun groups such as the NRA.

[25] In addition, it would have banned: It would have grandfathered in weapons legally owned on the day of enactment and exempted 2,258 specific firearms "used for hunting or sporting purposes," of which only 33 were semiautomatic centerfire rifles.

[33][35] The Manchin-Toomey Amendment was a bi-partisan piece of legislation that would require background checks on most private party firearm sales, sponsored by Democratic Sen. Joe Manchin and Republican Sen. Pat Toomey.

"And that means," wrote the Courant's Dan Haar, "as of Jan. 1, Connecticut has very likely created tens of thousands of newly minted criminals — perhaps 100,000 people, almost certainly at least 20,000 — who have broken no other laws.

The act expanded the definition of assault weapons banned in New York, created a state database for pistol permits, reduced the maximum number of rounds legally allowed in magazines to seven from ten, and required universal background checks on all gun sales.

[44] The NRA called the assembly's actions "a secretive end run around the legislative and democratic process ... with no committee hearings and no public input," and said the law was "draconian.

On December 31, 2013, a federal court judge struck down the act's limit of seven rounds in magazines capable of holding 10, but upheld its expanded ban on assault weapons.

Frank Miniter wrote in an April 2014 Forbes op-ed that one million residents own "assault weapons" and "high-capacity magazines" (which he says are political terms).

[47] Late on April 4, 2013, the Maryland General Assembly passed Governor Martin O'Malley's gun control bill, the Firearm Safety Act of 2013.

[48] On November 21, 2023, a three-judge panel in the Fourth Circuit voted 2–1 to strike down the handgun licensing requirement, in light of a 2022 Supreme Court decision broadening the interpretation of the Second Amendment.