I don't think we will ever undo all the damage. It's not "just" the economy but I guess I wonder why any competent person (think doctors, engineers, computer whizzes, etc) take a chance on coming to work in America, even if trump leaves office it will always be possible that someone else like him will come to power. The world does not need nearly as much unskilled labor as what the US seems to want to encourage, even factory jobs that used to be relatively unskilled will be phased out and replaced by AI. Or A ONe. Bill Gates projected that in 10 years most jobs that we know now will be done by AI. That may not be true, but may not be far off and the jobs we need to work with AI will need folks with critical thinking skills, and those folks are not going to want to come here and those here may not want to stay. My grandchildren already have plans to relocate to another country. I think it is very very hard to rebuild trust...there may be superficial trust and agreements that work ok but that other nations are not actually relying on.