A proposed crackdown on megasize retirement accounts, according to reports.

Critics argue that megasize accounts are used by startup insiders and the super rich to sidestep taxes on millions of dollars. While the precise figures are debated, the practice involves stashing large sums in 401(k)s and IRAs, which are typically intended for broad retirement savings.

The super rich use 401(k)s and IRAs to sidestep taxes on millions of dollars.