None are actually problems.

Yes, the NRA has written in language barring a federal registry of firearms to several existing laws. Repealing that language in a new federal gun licensing/registration law is simple, all the more so because the NRA has now been revealed as a criminal and treasonous organization.

No, the Supreme Court has not barred federal gun licensing and registration. In fact, Justice Scalia ordered the city of Washington, D.C. to license and register Dick Heller’s handguns in the case of D.C. v. HELLER (2008). Licensing and registration of firearms has a long history in the United States. For example, we’ve had federal licensing and registration of machine guns since 1934 through the National Firearms Act.

As for compliance, that’s an issue with any law that’s passed,which is why you have laws in the first place. You can arrest, indict, convict and imprison lawbreakers and remove them as a threat to public safety.

Finally, I don’t see state/local officials who try to block gun licensing/registration laws lasting very long at the polls. L&R will be incredibly effective and Americans are tired of being denied freedom from violence in our public places, including K-12 schools.