($ millions)
| Rank | State | Total | Exports | Imports |
|---|---|---|---|---|
| 1 | Texas | 30,318 | 16,394 | 13,924 |
| 2 | Michigan | 3,706 | 301 | 3,405 |
| 3 | California | 3,493 | 413 | 3,080 |
SOURCE: U.S. Department of Transportation, Research and Innovative Technology Administration, Bureau of Transportation Statistics, Transborder Surface Freight Data, 2008.