Our current government has done nothing to repeal it.
Neither has any administration for the last 100 years...
What law bans guns?
In District of Columbia v. Heller, the U.S. Supreme Court held that the Second Amendment secures an individual right to own and possess handguns in a home for self-defense. In District of Columbia v. Heller,the Court stated that an absolute firearm ban was unconstitutional.
The Court further determined that its decision in Heller does not impinge upon all existing statutes and regulations, such as those that prohibit felons and the mentally ill from owning or possessing firearms.
Are you saying you know the constitution better than the Supreme Court?
What exactly is your legal and political science education?