($ millions)
| Rank | State | Total | Exports | Imports |
|---|---|---|---|---|
| 1 | Michigan | 18,502 | 2,869 | 15,633 |
| 2 | Texas | 17,705 | 10,237 | 7,468 |
| 3 | California | 5,358 | 1,365 | 3,993 |
SOURCE: U.S. Department of Transportation, Bureau of Transportation Statistics, Transborder Surface Freight Data, 2003.