The only types of sterilization which the ruling immediately ended were punitive sterilization; it did not directly comment on compulsory sterilization of the mentally disabled or mentally ill and was not a strict overturning of the Court's ruling in "Buck v. Bell" (1927). Furthermore, most of the over 64,000 sterilizations performed in the US under the aegis of eugenics legislation were not in prison institutions or performed on convicted criminals; punitive sterilizations made up only negligible amounts of the total operations performed, as most states and prison officials were nervous about their legal status, which were not affirmed in "Buck v. Bell" specifically, as possible violations of the Eighth ("cruel and unusual punishment") or Fourteenth Amendments ("Due Process" and "Equal Protection Clauses"). Compulsory sterilizations of the mentally disabled and mentally ill continued in the US in significant numbers until the early 1960s. Although many of their laws stayed on the books for many years longer, the last known forced sterilization in the United States occurred in 1981 in Oregon. Federal law prohibits use of federal funds to sterilize "any mentally incompetent or institutionalized individual," but states including California use state funds for tubal ligations. A 2013 report showed that between 2006 and 2010, at least 148 women were sterilized after childbirth while incarcerated in two California prisons. In violation of state rules passed in 1994, none of the cases were reviewed by a state oversight committee.