Final answer:
U.S. organ donation law is a complex arrangement of federal legislation, state-specific statutes, and ethical guidelines. It involves informed consent, the use of blood relatives as donors to minimize organ rejection, and the vital role of immunosuppression in transplantation.
Step-by-step explanation:
The laws and rules regulating organ donation in the United States adhere to a combination of federal legislation, state-specific statutes, and ethical guidelines established by medical and transplant organizations. The decisions surrounding the medical response to patients declared brain dead incorporate complex bioethical issues, including patients' informed consent and the debate over the right to die with dignity. Harvesting organs or tissues without consent is considered illegal and unethical.
In terms of international involvement, the United States may participate in treaties and join international organizations that can influence organ donation policies, especially concerning international donations. Decisions to engage in such collaborations are made to promote global health initiatives and can affect domestic organ supply and guidelines.