Writing in City Journal, Heather Mac Donald on what we've learned from SB1070:
The Los Angeles Times’s story on the alleged effects of SB 1070 on Phoenix stores leaves out another critical fact: if illegal aliens are actually leaving Arizona in anticipation of the law’s implementation, a major plank of the open-borders manifesto has been demolished. For years, open-borders advocates argued that immigration enforcement is helpless against illegal entry. Therefore, the illegal-alien lobby concluded, the country should stop wasting resources on futile enforcement efforts. Rather, it should legalize everyone now here illegally and let the determination of who enters the country and joins the polity rest with the billions of people who live outside our borders, not with American voters.