WASHINGTON -- Pledging to "put everything I've got into this," a somber President Obama unveiled the most sweeping proposals for curbing gun violence in two decades, pressing a reluctant Congress to pass universal background checks and bans on military-style assault weapons and high-capacity ammunition magazines like the ones used in the Newtown, Conn., school shootings.
Surrounded by children who wrote him letters seeking curbs on guns, Obama committed himself to a high-profile and politically volatile campaign behind proposals assembled by Vice President Joe Biden that will test the administration's strength heading into the next four years. The first big push of Obama's second term, then, will come on an issue that was not even on his to-do list on Election Day when voters renewed his lease on the presidency.
"I will put everything I've got into this," Obama said, "and so will Joe."
The emotionally charged ceremony, attended by family members of those killed at Sandy Hook Elementary School, reflected a decision by the White House to seize on public outrage to challenge the political power of the National Rifle Association and other forces that have successfully fought new gun laws for decades.
The plan, which includes 23 executive actions, was described as a major initiative by advocates on both sides of the debate. But in many respects, it is limited in scope, reflecting the political constraints of an issue that deeply divides the country, as well as the power of the gun lobby.
Left out, for example, was a proposal for background checks on buyers of ammunition, which Sen. Richard Blumenthal, D-Conn., a proponent, called "the black hole of gun violence prevention." Such checks were included in a sweeping New York law that Democratic Gov. Andrew Cuomo signed Tuesday.
The most important parts of Obama's plan will require congressional approval. They include a federal ban on the sale of military-style assault weapons, with fewer loopholes than the 1994 law that expired in 2004. Several states already have such bans. The president also wants to reinstate an earlier ban on sales of magazines that can hold more than 10 rounds.
Obama also wants to expand the background-check system to encompass all gun purchases, including the nearly 40 percent that are estimated to occur at gun shows and in private sales. Six states require background checks on all firearms sold at gun shows, according to the Coalition to Stop Gun Violence.