Trump was against pivot to Asia when Obama was calling for it.
http://gettoinfo.com/news/a-timeline-of-trumps-complicated-relationship-with-the-tpp/
Instead of building an alliance to isolate China, the failure of securing TPP left allies in disarray and the US going head to head against China alone, and wielding the threat of punishment to force companies in allied countries to comply.
It left Korea and Japan deeply divided over trade issues, and Taiwanese companies are left in a no win situation.