congresswoman. a ban on large capacity magazines like the kind used in the arizona shooting. cnn national correspondent susan candiotti reports normally non-political tv star is now joining the debate. >> there was shooting at the safeway. >> reporter: a confused arizona shooter jared loughner chose a high capacity magazine to unload 32 rounds at 19 victims killing six. he was cackled while attempting to reload another 30 rounds. how did it affect you when you heard what happened? >> just gets you thinking, how's it going to stop? what are we going to do to control this kind of stuff? >> reporter: actor vincent donofrio is working on a fan for these magazines. one of the stars from "criminal intent" it's a rare jump from fantasy to politics.