evidence: Biden proposed eliminating stepped-up basis, so that the tax would apply on the asset’s full gain in value since purchase. It’s possible any proposal might apply only to those making $400,000, in keeping with his pledge not to raise taxes on people making less than that. [...] PolitiFact, "Yes, Biden seeks to eliminate policy that reduces inheritance taxes," Oct. 29, 2020 [...] Snopes, "Did Biden Vow To Eliminate the ‘Stepped-Up’ Basis for Capital Gains Tax?", Feb. 3, 2021