I have to apply for a U.S study visa and for a South Korean study visa. In case of not getting visa for U.S, I will go to South Korea. But I want to ask here that for which country's visa I should apply first? I mean if I apply for and get the South Korean visa first then will it strengthen my chances of getting U.S visa or it will weaken my chances, or it will have no effect on U.S visa application? Because in this case, a South Korean visa will be stamped on my passport that I will show to U.S visa officer.