There were never any โ€œNo Irish Need Applyโ€ signs in 19th-century shop windows; itโ€™s what historian Richard Jensen calls โ€œa myth of victimization.โ€ But, incredibly, there are signs now that say, in effect, โ€œNo Americans Need Apply,โ€ like this one in the window of an Asian restaurant in my town, seeking kitchen help and a dishwasher:

No Americans Need Apply

Think thatโ€™s intended for local teenagers looking for a part-time job?

Itโ€™s true that teenagers are less likely to work than in the past, even in places with little immigration. But, as my colleague Steve Camarota has calculated, the labor force participation of U.S.-born teenagers has declined twice as fast in high-immigration states.

As in so many other areas, mass immigration isnโ€™t the only reason for negative social trends, but itโ€™s a major contributor and the one over which we have the most control. And what the Senate is passing today, with its huge increases in permanent and โ€œtemporaryโ€ immigration, might as well be renamed the Anti-Teen-Employment Act of 2013.