I don’t think so. The worst they’d do is arrest him, and cut the handcuffs then deport him back to the US. Theyre not gonna risk actually harming a US senator over something like that. So what does he have to lose really.
He would certainly be censured by his fellow senators and probably lose his seat. Those were the material consequences he was avoiding
Whats the point of having a senate seat if ur not gonna do something with it anyway