Vietnam MFN?

On December 29, President Bush took the final step, authorized by legislation signed December 20, to provide MFN treatment to Vietnamese goods.  At the same time, the U.S. Commerce Department is discussing a special textiles monitoring arrangement, applicable only to Vietnam.  This raises a good question about the scope of the MFN obligation (not to mention provisions of the Anti-Dumping Agreement).  Does MFN include an obligation of equal procedural treatment in connection with surveillance, as well as equal substantive treatment?  While related issues were addressed in the GATT Brazilian Non-Rubber Footwear case, and in connection with national treatment in the Section 337 case, I am not sure there is an easy answer to this question.