A "one-time" surcharge tax, eh?
When they sold the 16th Amendment to the public, they claimed only the "rich" would have to pay income tax, and it would only be a few percent.
Turned out, really fast, that "rich" meant "anyone with a job".
If this "one-time" tax was passed, wouldn't be long, say by the end of the next year, that the government would be putting a cap on personal wealth and simply confiscate the excess. So long as the upper limit was over what the judges on the Supreme Court owns, that law will sail right through the courts.