Your best bet would probably be to look into MD/PhD programs. A lot of those are fully funded in the States, and when I was looking into it I found like 7-10 schools that accepted and fully funded international students. It is definitely really competitive, but the AMCAS conversion can work to some students favor. For example, if you study at Western, 80-100% converts to a 4.0 through AMCAS.
From my understanding, banks won't loan you money without a cosigner if you are going to medical school abroad.
Goodluck!