A U.S. research center said in a report released Wednesday some 100,400 Koreans living in the United States have family members in North Korea. A non-governmental U.S.-based organization said the figure is equivalent to 8.5 percent of the entire 1.22 million Korean population in the United States, according to a two-year survey begun in 2000 by the Institute for Strategic Reconciliation (ISR). Los Angles has the largest number of such Koreans with 36,300, followed by New York-New Jersey with 15,100, Chicago with 8,100 and Washington D.C. with 6,900. Based on the statistics, the ISR said it has sent a letter to U.S. President George W. Bush and National Security Advisor Condoleeza Rice urging Washington to address the separated families issue when presidential envoy James Kelly meets Pyongyang officials.