> devolving this question back out to the states, so states that overwhelmingly support restrictions regain some knobs to accomplish that (through licensure req

> devolving this question back out to the states, so states that overwhelmingly support restrictions regain some knobs to accomplish that (through licensure requirements) The issue with this is that there are no border or customs checks between US states (with some rare, ad-hoc exceptions). The result of this is you get states like Indiana and Virginia selling weapons with relatively few restrictions that travel up an "iron pipeline" to cities with more restrictions like Chicago and New York. The federal government is supposed to regulate interstate trade, but has decided that they won't regulate interstate transfer of guns _in this way_, so the most lax state law will de facto become the baseline for an entire region.