People who are pushing for a "guest worker" program show not the slightest interest in what has been happening under guest worker programs in Europe. Facts are apparently irrelevant.
So is logic. Guests are people you invite to your home. Gate crashers are people who come without being invited. Home invaders are people who break in, despite doors that have been shut to keep them out.
If the discussion of immigration laws respected either logic or honesty, we would be talking about a program to legalize home invaders instead of a guest worker program.
As for facts, guest workers from Third World countries have created centers of crime and violence in Europe, and some guest worker communities have become breeding grounds for terrorists.
Just as crime and violence in American inner cities have led not only to "white flight" but also to a flight of the black, Hispanic and Asian middle classes, so in Europe much of the native-born European population has fled from cities like Amsterdam, Rotterdam, and Brussels.