Table 7. Top 10 States Trading with Mexico by Surface Modes of Transportation ,, Ranked by February 2009 Surface Trade Value,, (millions of dollars),, Rank,State,February 2009 1, Texas,"6,140" 2, California,"3,046" 3, Michigan,"1,378" 4, Arizona,766 5, Illinois,693 6, Ohio,521 7, Tennessee,356 8, North Carolina,339 9, Pennsylvania,310 10, Wisconsin,287 "Source: BTS TransBorder Freight Data, http://www.bts.gov/transborder/",,