WASHINGTON, D.C. - Federal lawmakers, including Sen. Frank Lautenberg (D-NJ), are promoting new legislation that would restrict ammunition sales online and by mail.

The law was spurred by the deadly Colorado movie theater shooting. Police say the suspect, James Holmes, purchased more than 6,000 rounds of ammunition anonymously online.

Under the proposed law, only licensed dealers would be allowed to sell ammunition. Dealers would also have five days to report any sale of more than 1,000 rounds to an unlicensed person.

"It's one thing to buy a pair of shoes online, but it should take more than a click of the mouse to amass thousands of rounds of ammunition," says Lautenberg.