Hmmm...I note a small blind spot.
While the U.S. analysis you link to has marvelously detailed descriptions of many pokes at our privacy, all the way down to my credit card information, I don't seem to find any comment at all on the huge amount of personal data the IRS collects every year from every taxpaying citizen.
Seems odd that would slip by. Sure as hell it's high on my list of privacy issues. It says something about these folks, but I'm not sure what.