There seem to be some positives here:
https://www.washingtonpost.com/busi...60ce2a8148f_story.html?utm_term=.76a892bce7be
Less reliance on Chinese manufacturing may mean less intellectual property theft, and if US companies don't just move existing operations from China to SE Asia could mean more jobs in the US - ?
Next step would be to strengthen US relations with ASEAN countries.
One thing Trump has done controversially that also seems the right path to me (and this is after having read many hundreds of articles in economics and economic news, or thousands), is to threaten and do a so-called 'trade war' with the rogue nation China (rogue in it's way of doing business in as relative to the West).
About your good idea to strengthen relations with ASEAN countries -- we
were (past tense, before Trump sunk it), and it was called
The Trans-Pacific Partnership (TPP) --
also called the Trans-Pacific Partnership Agreement, is a defunct proposed trade agreement between Australia, Brunei, Canada, Chile, Japan, Malaysia, Mexico, New Zealand, Peru, Singapore, Vietnam, and United States signed on 4 February 2016, which was not ratified as required and did not take effect. After the United States withdrew its signature,[6] the agreement could not enter into force. The remaining nations negotiated a new trade agreement called Comprehensive and Progressive Agreement for Trans-Pacific Partnership, which incorporates most of the provisions of the TPP and which enters into force on 30 December 2018.
Trans-Pacific Partnership - Wikipedia
To me, my impression/guess: it looks as if Trump just wanted to replace the TPP or renegotiate from strength with nations individually, because it's not good enough to have something Obama did (that even if that something was actually very good, it would be bad because it was Obama, not Trump). He'd like to, metaphorically, buy a building, or demolish one, either remodel or rebuild, and then put 20 foot high letters on the side: TRUMP. That's not to say making some new agreements individually has to be less good, as time has passed, and such can be made better. It's a kind of....real estate speculation. Borrow big, build big, glitzy, showy, and either the economy makes the bet/gamble/speculation (with others peoples' money in the form of large loans) pay off, or...if the economy turns south just write off the loss and
pay zero taxes for year after year after year, even while you live in great opulence, conspicuous consumption. "Mammon".