Wow, unreal that she could approve such a warrant. Even in the absence of a federal statute it seems like a crazy step to take.
It seems plausible that the paper might report on things that relate to or impact neighboring states.
But like I said - even if the statute weren't there - what's wrong with calling them up and asking them to surrender whatever they're searching for under subpoena instead? Especially for the purported crime of "identity theft"?!
E.g. Wickard v. Filburn, held that a farmer harvesting a small quantity of his own wheat and eating it affected interstate commerce, because the farmer did not consume other wheat available in interstate commerce.
Just about anything commercial affects interstate commerce by this definition.