People are constantly bombarded with notices, to the point that most of us actually read very few of them. I'm not sure the notice makes a big difference here;

People are constantly bombarded with notices, to the point that most of us actually read very few of them. I'm not sure the notice makes a big difference here; what proportion of taxpayers do you think actually know their total tax liability and/or effective tax rate at the federal, state, and/or local levels? We have notice of all of them, but it's so hard to keep track of income, investment, sales, and property taxes, that very few of us actually know this stuff. I bet that if you put a notice of FISA data collection on someone's pay stub, it's unlikely they would even notice.