TPP won't be approved this year.

http://www.channelnewsasia.com/news/world/tpp-deal-won-t-get-senate/3075360.html

TPP won't be approved this year and the new incumbent president also won't approve it either.  Both presidential candidates stated very clearly in their propagandas that they won't approve TPP because TPP was detrimental to USA economy.

Any changes to TPP will have to be re-negotiated with Asia countries and this is very time-consuming.  Therefore, TPP has virtually no success rate in the future.