Bureau official : `` Between '07 and '08 there really was n't '' much immigration change . Notable increase in naturalized citizens , Grieco Michelle Mittelstadt says . Mexican -born population in Florida dropped by about 300,000 '08 .
Bureau official : `` Between '07 and '08 there really was n't '' much immigration change . Notable increase in naturalized citizens , Census Bureau 's Elizabeth Grieco says . Mexican-born population in U.S. dropped by about 300,000 between 2007 and 2008 .