Alan doesn’t spell it quite as clearly as I would like but he does explain what President Obama and the ATF want to do “is strictly forbidden under federal law”.
What should have been said is that in order to know if “multiple rifle sales are made to the same buyer within a five-day period” there needs to be central records kept of firearms sales. If such a central record store does not exist then it is trivial to defeat the reporting requirement. The multiple firearm buyer merely goes down the street and purchases a single firearm from every dealer. As far as each of the dealers is concerned it was a single firearm sale. The only way to block this “loophole” is a firearm owner registry maintained by a single entity. It is illegal for any Federal agency to create such a registry.
Even if the individual states were to do this long guns may be purchased in states other than your home state so the loophole would exist even if implemented by the states. Instead of going down the street the buyers would have to cross the state lines but in many locations that wouldn’t be that big of a issue.
In addition to such a registry being illegal a firearms owners registry in this country would be a huge failure with massive disobedience on a scale much larger than that experienced by Canada’s boondoggle.
Commonsense says that if it is illegal and it wouldn’t work even if it were legal any effort expended on the plan is wasted. Surely we can all agree that government waste is something to avoid.