Why is it so hard to tax billionaires? (Part 1)

2269.456 - 2299.64 PJ Vogt

Even for them, tax rates between 1% and 7%. But then, 1917, we enter World War I, the government needs a lot more money, and so those rates are immediately jacked on the ultra-wealthy, way, way up, as high as 77%. Which brings us to Chapter 5. Chapter 5. The rich try to get their money back. So I guess the thing I'm trying to understand, like, why does the tax code be getting more complicated?