We are working on an energy chapter. Again, the U.S. is somewhat resistant to having an energy chapter, but we're including provisions that we're putting forward to try to modernize that chapter in particular.
The proportionality clause is one that also will exist in the chapter on national treatment and market access for goods. The current energy chapter in NAFTA simply replicates something that's already found in another chapter. We're also looking at bringing Mexico into the energy chapter, because they were not part of it in the original NAFTA when it was negotiated.