Popular Science magazine went over the 9/11 conspiracy claims point-by-point in a long article followed up by a book. Here's a link to the article: http://www.popularmechanics.com/technology/military/news/1227842

Personally, this government has done a lot of things it shouldn't have done, but claiming that Clinton and Bush administration officials murdered over 3000 people in New York and Pennsylvania is over the top, insulting and appalling. Not only that, Osama bin Laden took credit for it.