How can a county sheriff say he is going to enforce federal laws while violating state laws? Where is his authority to do this? He’s not a federal agent. Which jurisdiction does the county fall under? I don’t see “county” anywhere in the separation of powers; they are obviously an arm of the state... not the feds... unless you happen to live in Waco.
And no, this is not the same thing as Arizona... law enforcement are enforcing a state law that AGREES with federal law.
A couple of ideas:
1) He thinks it will get him noticed and serve as a path to higher political office.
2) He loves the asset forfeiture goodies and wants them to keep on coming.