Long term foreign relationships cannot be built on top of four year presidential terms. Besides Israel, I'm not sure any country has continuity between recent administrations.
The US can do this because the dollar's global reserve currency status. This works on a longer cycle but will be far more painful and difficult to address when it reaches a tipping point.
The desire to come and immigrate to the US has greatly diminished. This use to be a easy decision for foreign students to stay in the US for work opportunities. Nowadays, a US degree isn't considered prestigious outside of a few elite schools and the cost has completely spiraled out of control. I've talked to numerous colleagues who abandoned waiting for a green card because it's no longer a clear cut decision. Opportunities and quality of life in other countries have either caught up or surpassed the US in certain areas. This would of been unthinkable 10-20 years ago.