Democrat Senator Elizabeth Warren and California Congressman Robert Garcia have recently introduced a bill called the Ammunition Modernization and Monitoring Oversight (AMMO) Act.  If passed, the bill would restrict bulk sales of ammunition, would require businesses who sell ammunition to obtain the same federal license as gun dealers, and would require businesses to conduct a background check on buyers.

Additionally, it would also apply the same prohibition on straw purchases for ammunition that currently exists for firearms.  It would make it illegal for individuals to purchasing ammunition and then give that ammo to others, and it would require data sharing on ammunition sales.