is the U.S, government trying to make ammo shortages?

is the government trying to make ammo shortages on purpose or what is the purpose of them buying all this ammo and it isn't just a particular caliber either its any and all calibers like even .22 i mean i shoot on a regular basis i have a .22 rifle and i love to shoot it because when i bought it ammo was plentiful and cheap now you are lucky to even find it and it just makes me wonder???? here is a news story from USA today Click here