Plural Pronoun Confusion

Here's a letter to the Wall Street Journal:

Undersecretary of Commerce for International Trade, Francisco Sanchez, applauds U.S. Trade Representative Ron Kirk for "negotiating tough bargains, ensuring that when America gives other countries the privilege of free and fair access to our market, U.S. businesses will get the same treatment in theirs" (Letters, July 23).

Question for Mr. Sanchez: What is this "our market" to which Uncle Sam allegedly holds the keys?

There is no single "our market"...