Where are you getting this stuff? Are you seriously under the impression that the only way to prosecute a wanted person who crosses state lines is to have the Feds arrest and charge them?

That just isn’t how it works. I’m not sure how you came to that conclusion.

If you commit a felony in Michigan they’ll put out a warrant for you and the authorities in whatever state you fled to will arrest you for that warrant. Once you’re arrested, Michigan will extradite you back to face trial. The Federal government’s involvement is not required and, in fact, it’s involvement in the process is incredibly rare.

Remember, your original post did not say that the federal government could charge these folks. You said that it is very likely that the federal government would charge these folks. The hyperbole doesn’t help.