Well, the question at hand was, and is: what should we be supporting? I don't, in fact, assume that what the NSA is doing is bad, but in order for the public and the oversight systems the legislature put in place, someone has to know what's going on. The program Mark Klein revealed surprised legislators, including John Sensenbrenner, the author of the legislation that was used as a justification for the program: https://www.rstreet.org/commentary/patriot-act-author-introd...
Many people worried that the PATRIOT Act was overreach for surveillance, but the bill did pass. What happened with Mark's whistleblowing is that policymakers and the public found out that there were other programs, potentially illegal under even the PATRIOT Act (and, indeed the US Constitution), that had been hidden or obfuscated to their oversight bodies.
(Incidentally, the government's strategy in the cases against the NSA program was to say that even asking about legal authorisation and grounding of the program was in itself, a violation of national security. Many years after Mark's act, Ed Snowden's first published leak was this authorisation document, confirming that Mark was right, and that, had those cases been able to proceed, there would have been grounds for investigation.)
Many people worried that the PATRIOT Act was overreach for surveillance, but the bill did pass. What happened with Mark's whistleblowing is that policymakers and the public found out that there were other programs, potentially illegal under even the PATRIOT Act (and, indeed the US Constitution), that had been hidden or obfuscated to their oversight bodies.
(Incidentally, the government's strategy in the cases against the NSA program was to say that even asking about legal authorisation and grounding of the program was in itself, a violation of national security. Many years after Mark's act, Ed Snowden's first published leak was this authorisation document, confirming that Mark was right, and that, had those cases been able to proceed, there would have been grounds for investigation.)