He is now, perhaps.
But what happens once he crosses the Beltway?
When Childers crosses the beltway, Thad Cockroach will have been admitted to a home for the hopelessly senile. Cockroach will not be able to resign to allow Haley Boss Hogg Barbour to name some similarly soulless creature of US Chamber of Crony Socialism to screw over the citizens of Mississippi and 49 other states. Childers will be a one-term Senator in Republican Mississippi. Whoever defeats him will be far, far better than Cockroach. Maybe Boss Hogg will have donned his asbestos suit and headed off for his final “reward” by then.