For the same reason people on the wrong countries aren't allowed to contribute to US projects.
The way things are going it becomes a national security issue where those PR are coming from.
So, to be clear, your reasons for looking for EU alternatives (i.e. that "same reason" you refer to) is that some countries are not allowed to contribute to US projects?
So, to be clear, your reasons for looking for EU alternatives (i.e. that "same reason" you refer to) is that some countries are not allowed to contribute to US projects?