Of all the groups of immigrants coming to the US each year, Koreans are said to be among the most successful, many reaching the highest levels of achievement in this country in a single generation. The BBC's Katie Beck went to New York to meet some of those who came, and found the American Dream. Sunhee and SeoJun Kim came to New York City from South Korea in 1986. They immigrated with hopes of giving their son Ron, then seven, every advantage and opportunity...[continued]