No, NSA Spying Did NOT Prevent a Terror Attack on Wall Street
...However, Mr. Ouazzani pleaded guilty to providing material support – in his case, money – to Al Qaeda, not to terror planning. His May 2010 plea agreement makes no mention of anything related to the New York Stock Exchange, or any bomb plot, notes David Kravets in Wired magazine.

Plus, Ouazzani’s defense attorney said Tuesday the stock market allegation was news to him.

“Khalid Ouazzani was not involved in any plot to bomb the New York Stock Exchange,” attorney Robin Fowler told Wired....

...Little was offered to substantiate claims that the programs have been successful in stopping acts of terrorism that would not have been caught with narrower surveillance. In the New York subway bombing case, President Barack Obama conceded the would-be bomber might have been caught with less sweeping surveillance....

...Postscript: Mr. Ouazzani giving $23,000 to Al Qaeda is indeed a crime. He supported Al Qaeda, and was rightly prosecuted and convicted for that crime. But given that the American government has been providing arms, money and logistical support to Al Qaeda in Syria, Libya, Mali, Bosnia and other countries – and related Muslim terrorists in Chechnya, Iran, and many other countries – Mr. Ouazzani’s support for terrorism seems rather small in comparison.