Here's two articles confirming the story:
http://newsbusters.org/blogs/geoffrey-dickens/2013/03/20/andrea-mitchell-scolds-fellow-reporters-you-guys-let-assault-weapo
http://washington.cbslocal.com/2013/03/20/moore-assault-weapons-ban-wouldve-been-voted-on-if-reids-grandchildren-were-killed-in-school-shooting/
No problem with the story, where can I find some ‘Old Bitch’ whiskey ...