That is easier to say than to do for Americans, and easier to say when it is theory and not reality.
If the situation ever reached such catastrophic levels, then most medical people would do what led them to devote their lives to medicine in the first place, they would show up to help, American nurses and doctors would not desert the sick in mass.
No doubt there are many medical professionals with that level of commitment and dedication. However, please keep in mind that medical professions have been among the few with well-paying positions that have grown and hired substantially over the past seven years.
So, there are quite a number of people in these positions merely for a job, with no such level of dedication to medicine.
Sure there are some that have a need, a calling to heal and help. Sure, you'd have a healthy percentage of pleasers, easily guilted rule followers but, by and large, most people are not going to risk their lives and their families lives for a situation that they probably can't help and a government that won't lift a finger to stop.