Federal humane law bans slaughtering livestock through dismemberment because the law requires that livestock be killed in a manner that renders them immediately unconscious. Likewise, the federal "Preventing Animal Cruelty and Torture Act" bans dismembering "living non-human mammals, birds, reptiles, or amphibians" because it outlaws purposely crushing or mutilating them. In contrast, most states permit dismemberment abortions on living pre-birth humans, and most of the 13 state laws that have attempted to prohibit them have been blocked by courts based on the precedent of Roe v. Wade. Dismemberment is the most common late-term abortion procedure, and more than 15,000 late-term abortions are performed each year in the U.S. at 21 weeks or later. At this stage of development, humans can sleep, awake, and hear sounds. Joe Biden and Kamala Harris have promised to nationally legalize and pay for such abortions with taxpayer funds.