None. He pays lobbyists to author it. And then pays PACs to get it enacted. Doesn’t even have to restrict himself to international relations or just one country. Do you really think he had no role in multiple national incentives for EV buyers?

And on top of that, he can directly influence the media via Twitter, the space industry via SpaceX, the automotive industry via Tesla, and any Republican politician via a phone call. A mere committee chair would be jealous, some of them can’t even win over the rest of their committee.