The GOP convention in Tampa is well underway and it's already given the gun lobby an early Christmas present. Last night, national Republicans gleefully adopted their most pro-gun platform ever.

It reads like a direct rebuke of my years of work in Congress to save lives from illegal guns and avoidable gun violence.

Their platform directly opposes bans on high-capacity ammunition magazines – the same exact devices that enabled shooters to take many lives on the Long Island Railroad and in Columbine High School, Virginia Tech University, Arizona, Colorado and Wisconsin to take more lives