anchor: Many aliens who became lawful permanent residents as Special Agricultural Workers (SAW) do not have the resources to bring their entire families to the United States, so these aliens also continue to come to the U.S. as single workers and return to Mexico during periods of unemployment.
positive: A lot of aliens who are permanent residents as SAW don't have money enough to bring their families to the United states, so they are forced to travel back and forth.
negative: A lot of aliens who are permanent residents as SAW have raised a lot of money to bring their families to the United states.