Yep, it does, called the Brady Act, passed in '93 after Clinton became President. Somehow we got along without it before then, at a time when there were a lot more gun dealers, when guns could be bought through the mail from the Sears and Wards catalogs. When even "convenience stores" (that is "gas stations, like 7-11 only more local) sold ammunition and sometimes guns as well. When even Target sold ammunition and accouterments. And you could also buy gun in many hardware stores. Now, thanks again to Clintoon, when we have many fewer places to buy guns, and have to jump through more hoops to do so, we have all these school shootings, and other incidents of mass murder.
The law is not written in stone and need not be expanded just because it can be. We fought it then, or many of us did anyway, and we'll fight it now.
i bought my first gun at age 18 at a sporting goods/camping supply store in NYC and took it home on the subway!so i do remember the good old days-it was an enfield mk5 jungle carbine and it had a real nasty recoil-the first time i fired it the extractor broke-anyhow-i believe the rules against nuts,felons,and illegal aliens possessing firearms predated the brady abomination by quite a bit