It is not the government that says no, it is the Organ Procurement and Transplantation Network. They set the policy on ages. Her doctors want to go ahead if an adult lung becomes available. However, the procedure comes with more risk than if implanted into an adult because the lung must be shaved down in size.
How did it become federal regulation though? To me the government being involved is a huge problem.
It should only be doctors involved. Government has no business here.