In some countries, such as France, every corpse is available for doctors to "harvest" for organs unless the deceased, while...

In some countries, such as France, every corpse is available for doctors to "harvest" for organs unless the deceased, while still alive, signed a form forbidding the organs to be harvested. In the USA, it is the opposite: No harvesting is allowed unless the deceased had signed, while still alive,an organ donor form authorizing doctors to harvest any needed organs. Use supply and demand figures to show in which country organ shortages are likely to be less severe.