Thank you, BFA. I wasn't aware of that slogan, but it doesn't surprise me, including Merkels comments about Turkish guest workers.

Gastarbeiter "problematization" is something US religious groups invading Germany under the radar are doing quite effectively. I wonder if that is realized by Germans. I did run more than expected into Mormons in the US who did their missions in Germany with an obvious interest in our "immigration problems". I think they do more than their missionary duties would ask them to do, but obviously you can't say that aloud, because it would mean I discriminate against Mormons.