His "fortune" is mostly ownership of Binance which is now under the thumb of the US government. If—as widely theorized—Binance's secret ingredient is crime then it's not going to be worth what it once was.
For example several very old Swiss banks have been shut down by US regulators because they were doing business in the US with US citizens and their secrecy was being used to break US law by Americans.
From a general government structure POV, I respected a Congress more than the prevalent US views, but I don't respect the US Congress any more.