We can always depend on the US to protect us and we can always come across the border for medical services.
Also we don’t have to worry that our government’s meddling in other countries’ internal affairs (killings of civilians, military bases, etc) pisses off Iranians or North Koreans and someone finally detonates a dirty bomb in LA.
As for the medical services, you must be confused. Canadian healthcare system is much cheaper than American and it manages to achieve superior results (longer life expectancies, lower infant mortalities) despite spending only half as much per capita. You’re better off receiving medical treatment or buying drugs in Canada. Have you ever heard about drug-buying bus tours? American seniors in northern states sometimes go on dedicated bus tours to Canada to buy prescription drugs. They are much cheaper there.
If you want some kind of elective surgery like a boob job or an IVF, neither Canada nor the US is a good choice. Mexico is the best choice. Tijuana has a booming healthcare industry that provides all kinds of services to Americans. For example, Mexican dentists have similar training and equipment to their American counterparts, but they are five times cheaper.