And the best of the best of medical students the world over compete to enter the US market. Being US board certified garners the highest pay even outside the US (eg GCC).
It’s kind of like our industry - the higher comp is a big reason behind how the US attracts talent from all over the world.
Just wanna point out that this sort of statement only really applies to the anglosphere. As in "medical students the world over can generally only speak english and their native language, so they can either apply for studies in their home country or an english speaking country, and some try to go to the US".
Not every country is in contention, as even if, for example, Hungary has the best medicine program, very few people are gonna learn Hungarian just to attend the university. The same argument applies for every country which requires a non-english language for admission.
This is not the case in Europe. You would not gain anything by being a doctor from the US vs the local ones. You may even be in a worse position due to many differences between the US and the host country.