No. This is perfectly ordinary for US. If I had signed anti-apartheid petition, I might have been denied entry in the 80's.
>borderline-rogue surveillance agency
That's not the opinion of the government. It's the job of the people to change the policy of the government. NSA surveillance is government run activity and foreigners speaking against it can be denied visa.
As forefinger I find the naivety of US citizens towards their government disturbing. NSA is not borderline-rogue as long as the White House and the Congress are on the same boat.