Already facing stiff opposition from gun-rights advocates and Republican lawmakers, the president called on Congress to pass several major changes to the country's current gun laws -- some of which are already being considered like the restrictions on semi-automatic weapons and high-capacity magazines.
Obama called as well for legislation to bar the possession and importation of armor-piercing bullets and to require criminal background checks for nearly all gun sales. The president, speaking at the White House, said he would use "whatever weight this office holds" to get the proposals passed.
"If there's even one life that can be saved, then we've got an obligation to try," Obama said. "When it comes to protecting the most vulnerable among us, we must act now. ... Let's do the right thing."