($ millions)
| Rank | State | Total | Exports | Imports |
|---|---|---|---|---|
| 1 | Michigan | 26,883 | 6,929 | 19,954 |
| 2 | Illinois | 5,438 | 2,671 | 2,767 |
| 3 | California | 3,467 | 1,997 | 1,470 |
SOURCE: U.S. Department of Transportation, Bureau of Transportation Statistics, Transborder Surface Freight Data, 2003.