I figure either he was shown some very strong and classified evidence that the data the NSA had been collecting was critical to protecting the people even while it violated their constitutional rights and freedoms or else he was shown how much dirt they have on him and his family and he was blackmailed into publicly declaring his love for NSA spying and handing them more tools to collect data while making only a few token changes.
Just, Devil's Advocate, but, yeah, why can't it be both?