You cannot negotiate with a country that doesn’t stand by its word.

All other issues aside, Trump and the Republicans love to boast that they aren’t bound by anything including their own promises. This is the end result of that.

You’d be mad to cut a deal with the US right now. The Trump Admin will just try to take another bite. They are dishonest and unreliable. Making America’s word mean nothing is the greatest long term damage done to the country and the surest indicator of the end of the American Century (80 years but we can round up)