The problem isn't the wealth tax but about creating a taxation system and monetary policy that actually helps people. There is this false assumption that a wealth tax will somehow eliminate wealth inequality. If you have an already broken economic system you will end up with more money in a broken system and it won't yield better results for the average person. But this is about marketing and "winning" not about prog…
As for the argument that the US should be more decentralized - less money goes to the federal government, more to the states - this may or may not be true, but this applies equally to all taxes, not wealth taxes in particular.