What drives this myth is anecdote. It is the old economic fallacy of noticing only that which is seen and ignoring that which is not seen. It is obvious when an immigrant is given a job before a native, you can see it with your own eyes, you hear about it from friends. However it is difficult, even impossible, to see the jobs being created as a result of the influx of immigrants.
"What does one do when contractions begin?" My arm shot up. I knew this one. "Scream," I answered. This response was met with disdain: "Wrong... You need to be in control. Screaming evokes the idea of someone who has lost control." I suddenly came over all John McEnroe. Was she serious? She could not be serious? How could she possibly say that?