70 decades ago, if I were a billionaire, I'd have no choice but to stay in the US and pay that tax rate. Europe is rebuilding from a war, Asia is an agrarian back-water and South America is about to start experimenting with Communism. Yeah, where am I going to run to, Mars?

Now it's different. I'll be laughing with my other billionaire buddies about your tax rate plans while snorting coke of a hooker's tits on my private yacht and watching the Monaco F1 GP from the harbor. I've got all the luxuries I need over there, and in fact, everywhere, that I previously could only enjoy in the US. I can talk with who I need to talk to over Skype, I can do my business, banking, everything, remotely.

It's not like other countries don't have equal or better infrastructure. It's not like I can get clean water and food only in the US that would somehow make this a magical place I'd never leave.

So why would I just sit quietly and let you tax me at 90%, exactly?