It's not a threat. It's a statement of fact. He is lucky to still have a seat in the Senate after the scandal he was connected to.
It seems that the former Delegate ought to spend more time in this region to understand the nuances of current affairs. And if he can't, then he should at least refrain from just throwing out unfounded inferences.
It really helps to know what you're talking about or at least be humble when you don't.