I don't think what he did was illegal per se, but he is definitely positioning himself against US geopolitical interests, which is a really bad idea if you are a US citizen, living in the United States. If he were to give away any military secrets that pass through star link, which I'm sure Russia will inevitably ask him to do, he will get arrested for espionage. He should tread very carefully.
You got down voted but you're absolutely right. We, as a collective society, have allowed billionaires and those with obscene amounts of money to operate above the law. We're seeing it play out over and over through different actions of the rich, and those that get charged usually get lighter sentences or are not convicted. It's honestly a large scale problem that is not being addressed.