
Otherwise known as the "No Accountant Left Behind Act" because it will suddenly become worth it for wealthy individuals to pay accountants and tax lawyers for structuring advice on how to reduce their tax bills through, for example, tax shelters.
It will also cause a number of individuals to expatriate and leave the U.S. This will be a particularly advantageous time for them to do it if stagflation has temporarily reduced the market value of their assets, because it means they will leave the U.S. with a smaller "exit tax" liability than they would otherwise have suffered.
Since the IRS is required to publish (quarterly, I believe) a list of people who have expatriated, it should be possible to measure the effect that way.