An emergency is unlikely. More likely is American becoming increasingly secular and turning to a “freedom from religion” regime. Since Israel is already run by anti-religious and will move more towards secular extremism to follow the Americans, there is obviously a problem.
if the Arab-Israeli conflict were settled, migration back to Islamic countries becomes possible. There are conservative religious countries in some parts of Africa and Asia. One should not rule out the possibility of moving to another planet should that become technologically workable.
Note that the conditions that cause frum Jews to feel a need to leave the United States are likely to affect many other religious groups who exist at the margins of American society.