After all these years, FBI has now expressed an interest in arson cases. No, not the silly bodega fires in which $40k worth of store contents are lost (does that really affect interstate commerce?). FBI has finally realized that arson can be, and has been, used as terrorist weapon. A couple of years ago, the same Sensenbrenner sat on a policy paper warning about the potential of using fire. Imagine three or four simultaneous wildfires across the southwest. Or imagine several concurrent Coatesvilles (just don't blame the Jugaloos immediately, like the Philadelphia Division SES's and the division's idiot "intel" supervisor did).
There are already internal DOJ proposals out there. The firearms regulatory responsibility would be turned over to the DEA's diversion branch.
As for criminal enforcement, any halfway decent police department can do the same simple drug cases that ATF has made its bread-and-butter. The only difference is that the PD doesn't need a bunch of people making $130,000 and driving new Taurus sedans and Explorer SUV's. And the NYPD has demonstrated that you don't need an ATF to break up interstate gunrunning rings.
It is amazing how many people have bought off on the "Intel" supervisors BS. A Brooks Brothers suit makes him an expert in the eyes of a lot of these SESs. They promote so many people who do not have a clue. Connections are the only thing that matter.