exasperated sigh Taxes are legal... Nothing unconstitutional about a tax on wealth. The bit about "uniformity" is already severely out-of-whack; so, arguing like it isn't doesn't make sense. Uniformity could also be implemented by tax bracket, et voila, problem mostly solved, but not like it ever was a problem.
The NYTimes had an article today about the difference between an income tax and a wealth tax, and how there is a constitutional problem with the wealth tax. https://news.ycombinator.com/item?id=21472442