The myth of the redemptive Hispanic is finally cracking. For years, conservative open-borders advocates have touted Hispanic “family values” as a prime reason to increase immigration. Hispanic immigrants, these conservatives say, will save America from itself. At a time when Anglo and black families are disintegrating, when society is becoming increasingly atomized and alienated, Hispanics will bring the traditional values that the country so desperately needs. In a classic iteration of the theme, Larry Kudlow wrote on NRO last May that Hispanic immigrants would “become a much-needed churchgoing blue-collar middle class . . . that is crucial to a healthy...