They are building how big of a spy center in Utah? You don't think that they already have the form 4473's in the system?
I think it is as silly to think that they don't know what is out there as it is to think that you will be able to get rid of the government agents with flip responses.
They will use the IRS and every other government agency to make you comply. All they have to do is make a few violent examples. You think the military and police aren't up for that. Reference Ruby Ridge, Waco, Bonus Army march, Ken Ballew raid, etc.
Every gun owner should read Unintended Consequences by John Ross. It is a great novelized history of gun control in America.