Here is TSA's own blog saying nail clippers are allowed:

http://blog.tsa.gov/2008/01/lighters-nail-clippers-and-lithi...

http://blog.tsa.gov/2009/05/tsa-urban-legends-nail-clippers....

http://blog.tsa.gov/2010/12/tsa-response-to-claim-that-nail....

http://blog.tsa.gov/2010/12/updated-tsa-response-to-claim-th...

wtf? The OP just (implicitly) agreed that this was the case, and that nail clippers had been taken anyway... who reads the TSA's blog?