Medical costs in foreign countries like USA is quite high and in case of an unexpected medical emergency, a visitor would have to face mental trauma from high costs too. This is where visitor insurance brings relief.  A visitor must purchase visitor insurance plan based on his needs. A plan that perfectly suits his medical and other travel related needs would cover him adequately during his trip. He or she must be well aware of important factors that go in purchase of the right visitor insurance plan. But there are some important things to remember after the purchase of visitor insurance plan. Refer them here: