“Lincoln County Sheriff’s Office investigators contacted the U.S. Marshals to help apprehend Cornwell.”
Assisting local law enforcement in capturing fugitives is one of the legitimate jobs of the U.S. Marshalls. Remember Tommy Lee Jones’ character in “The Fugitive”?
That was a fugitive who crossed State lines.
This guy was holed up...in his house.
I think the real reason here was the mention of explosives, so they can bring up federal regulations about that.
But it’s really ludicrous overreaction to one guy bloviating. You can take anyone’s statements and escalate it into “a federal case” as the joke goes. And this was a joke.