The Khashoggi incident is just another weapon to use against Trump. And as for the rest like Newt and Graham, it is about phony moralizing and possible pressure from the Saudi lobby to get rid of the CP.
Again, this reminds me of the Carter human rights campaign that greased the skids for the removal of the Shah. The real test should be our own strategic national interests. We deal with corrupt, tyrannical dictators around the world. It is not a choice between good and evil, but rather the lesser of two evils.
Exactly the Saudis have been less than perfect ever since they were corrupted by 41 decades ago.Since then little has changed until Trump made deals with MBS.After that everything changed. Those who want to alter that are either cabal/deep state or brain dead.