Arizona taking away constitutional rights?

[Riot]

again, this isn't necessarily true. counterfeiting currency (for example) is a federal felony, with the secret service holding jurisdiction. yet local, regional, and state police arrest people, investigate people, all the time on this charge.

Under the jurisdiction of the Secret Service. As you point out:

'Counterfeiting money is a federal felony. Unlike other federal crimes, the Secret Service is in charge of investigating counterfeiting cases ...

If there is additional investigation required and the crime is apparently federal, most often the U.S. Attorney will request that the local FBI office get involved

The point is: who is in charge of American citizenship, naturalization, etc? The Feds.

Not the Lexington Police Department.