They are protecting public health and treating a fellow American doctor, the next American you want to ban from being treated here might be a GI rather than a Christian missionary, we have many in Africa.
Nice try at a redirect. GIs have top notch med facilities the world over, they never come here first, and would certainly not be at a civilian hospital in major city center.
A disease with no cure, a 60 to 90 percent mortality rate, and unknown transmission mechanism is not what a sane person brings to a major population center.
Even the WHO says this is out of control, and thy are the experts in the field.