To be clear: I think it's _great_ that we went out of our way to get those doctors back to the US for treatment. If it would be resource-prohibitive to help everyone, I think it's important to help the helpers first, and we owe that to them.
But the issue with experimental drugs is not one of resource constraint. We _could_ give them to anybody who asks. It's not that we gave them to the doctors because they are more deserving, but rather because they are insiders to the system and thus can get strings pulled and rules bent.