A while back I asked:
if NAFTA gets subsumed in the TPP, would that satisfy Obama's campaign pledge to renegotiate NAFTA?
It appears that maybe U.S. Trade Rep. Froman is thinking along the same lines:
“As a candidate for President, then-Senator Obama said he would renegotiate NAFTA, put labor and environmental standards at the core of trade agreements and make those standards enforceable like any commercial commitment.
“That’s exactly what we’re doing in TPP, upgrading our trade relationships, not only with Mexico and Canada, but with nine other countries as well.