President Biden's latest budget proposal includes a 25% annual minimum tax on unrealized capital gains for individuals with income and assets exceeding $100 million, which could significantly increase the top marginal rate on long-term gains and dividends to 44.6%. This policy has been met with broad opposition, with Americans rejecting the taxation of unrealized gains by a three-to-one margin, citing concerns about economic liberty and fairness. The Supreme Court is currently considering a case, Moore v. United States, that challenges the constitutionality of taxing unrealized gains, which could impact the viability of such wealth tax proposals.