Just because it deosn't say "immigrant" doesn't mean they aren't effectively immigrants.
Do they compete for food, clothing and shelter like "real" immigrants (driving up prices)? Yes.
Do they use our public institutions (libraries, parks etc) like "real" immigrants? Yes.
Do they compete for jobs/employment like "real" immigrants? Yes.
Do they create cultural ghettos like "real" immigrants? Yes.
Do they pay income taxes like "real" immigrants? Often the answer is no.
Why would we look at them as anything other than immigrants???