A new Arizona anti-illegal immigration law asks police to perform tasks that are often contradictory, critics say – enforcing immigration law and criminal law.
The Dust Bowl. During the 1930s, a period of severe dust storms engulfed the American and Canadian prairie lands. The cause: a severe drought coupled with decades of land misuse that left topsoil susceptible to the wind. The so called "black blizzards" forced hundreds of thousands of people in Oklahoma, Texas, New Mexico, Colorado, and Minnesota to abandon their farms, exacerbating the dire economic conditions of the Great Depression. This image shows a dust storm approaching Stratford, Texas, on April 18, 1935.
A newborn camel and its mother are seen at the zoo in Zurich, Switzerland, on Thursday.
A large globe, with the US Capitol in the background, is seen on the Mall as part of Earth Day celebrations on April 22.
The constitutionality of protest rules was called into question after a tea party rally was allowed full-size flag poles and signs on wooden sticks, which antiwar protesters are often barred from using.
A federal policeman guards the area where bodies were found on a highway to the US border found in the town of San Juan near the city of Monterrey, Mexico, May 13, 2012.
Anwar al-Awlaki is an American hiding in Yemen. Tied to the Fort Hood shooting and Christmas Day bomber, he is thought to be plotting attacks on the US. In fighting the war on terror, the Obama administration has put him on the kill-or-capture list.
Risk of US prosecution, rather than a trip home for illegal immigrants, is rising as a deterrent to crossing the Mexico border. But the success of the zero-tolerance Operation Streamline is hard to gauge.
Tamara Schirrmacher dresses up as The Statue of Liberty as she holds chains that she says represent the national debt during a tax day Tea Party event in Pleasanton, Calif., April 15, 2009. Protests took place around the country to demonstrate against recent bailouts and excessive government spending.
Some US cities can escape one or even two recessions. These Top 10 rebound cities have recovered jobs quickly after at least three recessions.