Let’s review:

→Revoke the licenses of gun manufacturers & dealers that break the law

I am pretty sure that is what’s in the law and ATF is in charge of already.

→Require anyone who sells more than 5 guns/yr to run a background check on all gun sales.

Anybody who engages in the business of selling guns, needs a license and perform background checks. But even if he is not in the business and is selling his collection of 7 Ruger 10-22s, how the flock are you gonna enforce that law?

  →Ban the importation of AR-15-style assault weapons

Yes! Because we need to stop those high capacity death machines manufactured in Nepal and Bolivia!

I barely recall that a incense to manufacture was given to Taiwan way back in Reagan years, I think.  But importing AR 15s?  Coals to Newcastle.