Democratic Senator Dianne Feinstein proposed a new federal ban that would upgrade the assault weapons ban that expired in 2004 and also prohibit magazines that hold more than 10 rounds of ammunition.
Feinstein admits getting passage of her proposal will not be easy.
"If anyone asks, 'can you win this?' The answer is we don't know, it's so uphill," Feinstein said.
Are Democrats overreaching on gun control and risking any chance for success?
OutFront tonight: CNN Contributor Reihan Salam and Roland Martin.
— Sen Dianne Feinstein (@SenFeinstein) January 24, 2013