All Things Considered

A majority of U.S. Supreme Court justices signaled Wednesday that they will uphold at least part of Arizona's controversial immigration law. Four provisions of the law were blocked by a federal appeals court last year, and while even some of the court's conservatives expressed skepticism about some of those provisions, a majority seemed willing to unblock the so-called "show me your papers" provisions.

Most people wouldn't think of Washington, D.C., as one of R&B's great cities. Despite the fact that soul music greats Marvin Gaye and Roberta Flack grew up in D.C. neighborhoods, the city never had the equivalent of Detroit's Berry Gordy and Motown, or Memphis' Willie Mitchell and Hi Records. But in the early 1970s, D.C. did have producer Robert Williams and his Red, Black and Green Productions. A new compilation album called Eccentric Soul: A Red Black Green Production revisits Williams' influence on the sound of R&B in D.C.

The idea of exploiting the natural resources on asteroids has been around for more than a century. But a new company called Planetary Resources has the financial backing of some big names in high tech, and hopes to launch specially-designed prospecting spacecraft within two years.

Mexican immigration to the United States has dropped sharply in recent years, according to a recently released study from the Pew Hispanic Center. Robert Siegel talks with Rafael Fernandez de Castro, a political analyst in Mexico City who specializes in U.S.-Mexico relations, about the reasons behind the drop off.