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The Washington Post has an article written by an IT administrator concerning the effects of National Security Letters and specifically the gag orders these letters contain. Consider:

I found it particularly difficult to be silent about my concerns while Congress was debating the reauthorization of the Patriot Act in 2005 and early 2006. If I hadn’t been under a gag order, I would have contacted members of Congress to discuss my experiences and to advocate changes in the law.

I’m surprised any gag order prohibits contacting one’s representative in Congress. Aren’t there whistle blower protections for precisely this kind of situation?

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