One of the big issues for these kinds of things is that the United States has 51+ governments. The Federal Government has limited power and for a lot of stuff t

One of the big issues for these kinds of things is that the United States has 51+ governments. The Federal Government has limited power and for a lot of stuff the 50 states can do their own thing. The Civil War did move more power to the Federal Gov, but the States are still very independent.