United States participate as members of a United States major trading partners because of TPP of any country. United States has a huge role in TPP framework and negotiations because as a new AEC, thus attracting American businessmen to invest in the ASEAN region.
States joining the TPP because the US is a major trading partner of every country. The United States has played a huge role in the TPP negotiations were due to be reunited for the AEC, ASEAN has attracted the attention of American businessmen to invest in the region.
Because the United States is the United States to join TPP principal trading partners of all countries. The United States, therefore, plays a significant role in agreement TPP and because ASEAN are assembled into AEC.