TPP

The US was the pioneer of TPP. 

Then Trump came in and pulled out.

The rest of TPP continued and have now formed their free trade union.

Now Trump wants to go back in:

https://asia.nikkei.com/Opinion/US-needs-Asian-partners-in-economic-fight-with-China2

It would be the best of things if the US is back into it.

However, read this and learn about possible problem about the US getting back in.