Table 7. Top 10 States Trading with Mexico by Surface Modes of Transportation ,, Ranked by March 2008 Surface Trade Value,, (millions of dollars),, Rank,State,March 2008 1,Texas,"7,223" 2,California,"3,958" 3,Michigan,"2,642" 4,Arizona,960 5,Illinois,826 6,Ohio,623 7,Tennessee,486 8,North Carolina,472 9,Georgia,432 10,Pennsylvania,395 "Source: BTS TransBorder Freight Data, http://www.bts.gov/transborder/",,