I don't know I'm no legal expert. However I'm old and remember well the Brady bill, the assault weapon ban, the starting of the background checks and there was huge talk of guns being protected by the 2nd amendment, but lots of talks from legislators saying that didn't apply to ammunition and they were trying to go after that and limit the amount you could buy and restrict sales of components etc...
Well they may or may not do that again in the future. It didn't come to pass but, but the upside is 25 years ago I really started putting the ammo and reloading components away. So while people were going crazy and spending stupid amounts of money for .22 ammo I'm proud to say I have enough on hand for at least myself, my kids, their kids, and my great grandkids plus whatever else.