...would it? That's an honest question. He's widely assumed to be corrupt, to have a large amount of money personally, and an enormous amount more at 1+ remove

...would it? That's an honest question. He's widely assumed to be corrupt, to have a large amount of money personally, and an enormous amount more at 1+ removes held by people connected to him. There's no sign that he intends to leave power, which means he can store plenty of it without any paperwork at all - just an implicit "you'll use this as I ask if I ever do ask". But he's also virtually untouchable, and his wealth-hiding seems to be less "no one can find it" and more "no one can prove it so undeniably that it becomes inconvenient". I'm not convinced there's anything 'leakable' that would be particularly important.