This one doesn't say 23, and I don't know where that number comes from, but is 14 enough to make the point? Take it with a grain of salt though, this isn't a respected major mainstream media source. It's just the New York Times.
http://www.nytimes.com/2012/04/29/opinion/sunday/terrorist-plots-helped-along-by-the-fbi.html?pagewanted=all&_r=0
Thanks for the link, I want stuff like this to show sheep that need the MSM to slap them with it.