Taxing unrealized capital gains was proposed by Elizabeth Warren and Bernie Sanders. Biden adopted it in 2022.
If this were allowed, a property tax on unrealized gains on millionaires, and was found to be Constitutional, how long before it is applied equally to all?
"While Democrats claim this plan would only hit 700 taxpayers, it’s likely that this tax would grow to hit millions of Americans.
Congress enacted the Alternate Minimum Tax (AMT) in 1969. They targeted 155 people with adjusted gross income above $200,000 who legally paid zero federal income tax due to their large purchases of municipal bonds.
But the AMT grew so large that, by 2010, 30 million Americans (20 percent of filers) were in the crosshairs of the tax. Congress then had to step in a reduce the scope of the tax."
This article is from 2022
This is not a new idea in the Democrat camp. There are rumors Biden proposed a 3% Federal property tax in one of the huge spending bills but no direct evidence of that has been presented.