Let's see what they accomplished:
1934: Massive step. Establishes gun licensing (under the premise of a "tax stamp"). in the US. Restricts machineguns, SBRs/SBS, silencers.
1968: Restricts everything over 0.5 inch (shotguns exist only by exemptions granted by DoT), restricts imports, restricts pistol sales, restricts ammo sales, restricts registering NFA weapons which are not new.
1986: Rolls back ammo sale restriction, supposed lawful-transit protections (this is ignored by several states). Bans machineguns.
1989: Import bans by executive order. These have never been rolled back.
1994: Assault weapon ban (ends in 2004 by Congressional inaction).
They've advanced by several massive steps.