And it is only going to get worse as the doctor shortage gets worse. much worse if we get public health. The number of foreign medical grads in UK and Canada is enormous.
It is smart, in an evil perverted way.
Doctors, like airline pilots are put in positions of trust and are able to do great harm with little or no help.
Most western countries love to import medical professionals from a variety of different countries. If a terrorist is patient and ruthless, they can worm their way into places where they can inflict the maximum amount of damage. Therefore, they are trained, find entry less restrictive and then wait for the most opportune moment to strike.
There is also the potential for larger scale terror too. Perhaps the goal is access to US bioweapons.