Lot of Saudi/Emirati money has gone to Trump and Kushner private business interests. Corruption a big part of this story. Post-Trump reforms must require presidents to divest and reveal tax returns. Think that's unfair? If you care more about personal profit, don't run for POTUS
The arms deal was mostly set before Trump took office, and they touted a promise rather than actual value of contracts. I haven’t seen evidence of kickbacks for Kushner or other public officials for Saudi arm sales. I’m thinking of loans, investments, and spending at properties.