Say you have a family and that you have this NSF director position. You get some orders that you do not agree with, and at the same time you know that your partner could be disappeared tomorrow to El Salvador, by mistake of course. What is your plan to fight and protect your family?
Perhaps take some vacation days to get that "partner" of yours citizenship?
Citizenship status doesn't matter if you create a one-way jurisdictional valve people can be pushed through before there is time to assert status and rights.