Question of the Day: Does the Government Have a List of All Gun Owners?

NSA's Wasatch Range facility (courtesy wired.com)

What are the odds that the United States government has a computerized list of all Americans who own guns, which guns they own and where the owners live? In these post-Patriot Act times, with the NSA building data monitoring computers that require their own power plant, with ARGOS-equipped Hummingbirds watching over us, with the ATF’s history of doing as they please, I’d be surprised if Uncle Sam didn’t know who you are and what (generally) you have in the gun safe. I’m not saying it’s time to give up on the fight against gun registration. Far from it. No compromise. No surrender. I’m simply wondering if we’ve lost that battle. And if so, what does that mean?