The executive branch is not the judicial branch. Unlike China, the US actually has an independent judiciary. And, in this case, what “corporate interest” is driving this? This is a case concerning Iranian sanctions — American companies would love to be able to sell to Iran (or anyone for that matter.) how does it support US corporate interests to prosecute sanctions violations (involving US manufactured equipment?)
And millions aren’t starving in Saudi Arabia. Saudi’s Arabia is also ostensibly an ally that doesn’t point potential nuclear weapons at its neighbors. Saudi does have plenty of problems, but the Iran situation is one of a hostile regime threatening the region with nuclear weapons. A regime that actually promotes “death to America” and promotes the total destruction of Israel. The Saudis and the Israelis don’t publicly get along, but they tend to leave each other alone and cooperate under the radar, while Iran is a state sponsor of Hezbollah and pursuing nuclear weapons. A state sponsor of terrorism mixed with nuclear weapons? A pretty dangerous combination. There is no comparison with Saudi Arabia.