> Instead, there are 51 different state policies.

That would be truly remarkable, given that there are only 50 states (the District of Columbia is not a state). I don't know if each U.S. federal polity is governed by different title rules, but it wouldn't surprise me, since areas such as American Samoa, Puerto Rico & Washington, D.C. have radically different histories: American Samoa was ceded by her native rulers; Puerto Rico was conquered from Spain & the District of Columbia was ceded by Maryland, ultimately from land granted by a royal English charter.

I think it's important to note because the United States are more complex than commonly understood.