William O. Douglas,
Pearce v. Commissioner of Internal Revenue…
“ Local law may provide that the transfer of property under a divorce settlement finally and definitively terminates a husband's obligation to support his wife, and that, once such a settlement is made, the wife loses her right to apply to a court for an order requiring the husband to support her. If the local law gives the settlement such effect, it is immaterial what the nature of the transferred property is. For in such a case the income derived from the property cannot be regarded as conferring any benefit upon the husband, and it is therefore taxable to the wife. ”
