Have we balkanized ourselves out of any meaningful notion of nationhood (‘from sea to shining sea’)? Is what is good for the gander-ites in New York State today likely to be what is good for the goose-ites in Wyoming? Is a young man packing heat in the first-mentioned venue, for instance, of the same concern as a young man toting a shotgun in the second? My sense is that passing universal gun laws to apply equally in all instances would be pure folly. In the short term, it would spawn intense animosity and resistance; in the longer term, open rebellion.
Might we invoke here, in way of example, the Stamp Act of 1765?
The same is true, I suspect, of abortion, school prayer, creationism, global warming, same-sex marriage, and a hundred other such issues. The only realistic way to settle these issues to the satisfaction of all (most) concerned, in each instance, would seem to be through some kind of localization, whereby every state, region, or community (the latter of a certain size and sensibility) would decide for itself what was best for itself. In a highly diverse (fragmented) society, one size cannot fit all.