You would think this would be wildly unpopular and probably unconstitutional, especially the unrealized gains tax.
However, if you flood the country with millions of really poor people and make millions of your own citizens poor, people that own nothing and are happy with it, selling this idea makes a lot of sense to that group, basically a Robin Hood idea, steal from the rich to give to the poor, not realizing in the lead up to this tax being implemented you would have a depression to rival anything we’ve ever experienced.
I believe the Supreme Court ruled sometime ago that realization was required before you could measure income and tax it