Jeb Bush wrote in a 2013 book that 'leaky' immigration policies led to the 2001 terrorist attack on the U.S. - although he attacked Donald Trump last week for saying the same thing.
http://www.dailymail.co.uk/news/article-3279572/Jeb-admitted-book-leaky-immigration-policy-led-9-11-exactly-said-pathetic-Trump-blasted-brother-failing-prevent-it.html