Hispanics who are not U.S. citizens are more than twice as likely to be uninsured as those who are citizens, according to a new report by the Agency for Healthcare Research and Quality. Among non-citizen Mexicans, two-thirds were uninsured in 2004 compared with 27% of citizens. Non-citizens in other Hispanic subgroups also were nearly twice as likely to be uninsured than their citizen counterparts. The estimates are based on 2004 data from the Medical Expenditure Panel Survey, co-sponsored by AHRQ and the National Center for Health Statistics.