In Democrats¡¯ latest effort to find a way to extract more revenue from America¡¯s wealthiest, Sen. Ron Wyden of Oregon has proposed taxing them annually on assets they haven¡¯t sold.

It¡¯s a complex plan bound to hit legal roadblocks and create logistical headaches.

Fortunately, there¡¯s a sounder idea for targeting the more than $5 trillion America¡¯s billionaires have earned yet have paid relatively little in taxes on. It¡¯s based on a plan that was part of President Joe Biden¡¯s revenue proposals earlier this year: Instead of taxing the wealthiest each year, as Wyden would do, Biden¡¯s original plan would tax them upon their death.