Question wording drastically changes the results on polling whether people support the Patriot Act, but broadly speaking, it appears most Americans support its existence and most Americans believe it is in need of moderation. I don't think it's as simple as "Public opinion has no effect on policy;" it's that the policy response to "most people aren't happy, but nobody can gel behind a concrete changelist" is "stay the course."

I agree on the education question, but that's going to be a regular pattern in public polls. General public savvy on privacy issues and the power of technology to consolidate information has not kept up with technology. And, TBH, if the situation at hand is actually "Most Americans don't understand the problem well enough to articulate their wants in the context of the issue," that's a scenario where public opinion shouldn't drive policy. A democracy of the uneducated doesn't work.