I’m going to out on a limb here and assume that you mean “aliens”? Illegal? Maybe, do they have passport, visa, any documentation or permission? Do they even speak any of our languages? Who knows... housing them, not needed as they obviously have their own scout ships with undoubtedly a large mothership from which they came. Probably in orbit around our planet or possibly on the moon, according to scientist and religious leader Louis Farrakhan.Read some books and turn off the TV.