Suggest the only way to pursue the principals in america is to a) get the saudi's to make it a criminal investigation implicating the individuals for further investigation by the authorities in the US b) as an individual residing in the US bring a case of fraud/deception to the federal authorities attention, no amount of offshore companies and contractual 'hold harmless' BS will protect them against this ifs there is a proven case and they are seen to be party to the fraud/deception...