I think the best way to do this would be American Congress passing a law giving President power to directly "Ban equivalent companies of other countries, which

I think the best way to do this would be American Congress passing a law giving President power to directly "Ban equivalent companies of other countries, which ban American companies on their respective jurisdiction". This is full of subjective opinionated law to pass, but at least courts would have some ground to held the bans. Courts are good at deciphering "intent" of the law. This ban is effectively a Tit-for-tat. Thats it.