As I read the relevant law, it's sort of a de facto determination that you're renouncing your citizenship for tax reasons if your net worth or income are over c

As I read the relevant law, it's sort of a de facto determination that you're renouncing your citizenship for tax reasons if your net worth or income are over certain limits (which he's waaaay over). It's possible to have that de facto determination overruled by certain government officials if you can present a convincing case to the contrary, but I haven't seen anything indicating that he's done that.