Secretary of State Rice on trade with Syria last Friday:

...[G]ood neighbors don’t close their borders to their neighbors and it is a very serious situation on the Lebanese border where Lebanese trade is being strangled. The best outcome would be for there to be free flow of commerce between Syria and Lebanon and we would hope that that would be restored very, very soon.

Her boss on May 11, 2003 in his Executive Order 13338, reflecting a rather different approach to trade with Syria:

[T]he Secretary of Commerce shall not permit the exportation or reexportation to Syria of any item...with the exception of food and medicine [and] [n]o other agency of the United States Government shall permit the exportation or reexportation to Syria of any product of the United States...

So, to recap the administration's position -- Lebanese exports to Syria very, very good.  American exports to Syria very, very bad.

The excellent Daily Star of Beirut has some details on just what's happening on the Lebanon-Syria border.