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been discovered in a dead dairy cow.
• The finding, announced Tuesday, is the first new case of the disease in the U.S. since 2006 -- and the fact that the discovery was made at all was a stroke of luck. Tests are performed on only a small portion of dead animals brought to the transfer facility near Hanford.
• The cow had died at one of the region's hundreds of dairies, but hadn't exhibited outward symptoms of the disease: unsteadiness, incoordination, a drastic change in behavior or low milk production, officials said. But when the animal arrived at the facility with a truckload of other dead cows on April 18, its 30-month-plus age and fresh corpse made her eligible for USDA testing.
• "We randomly pick a number of samples throughout the year, and this just happened to be one that we randomly sampled," Baker Commodities executive vice president Dennis Luckey said. "It showed no signs" of disease.
• The samples went to the food safety lab at the University of California, Davis on April 18. By April 19, markers indicated the cow could have bovine spongiform encephalopathy (BSE), a disease that is fatal to cows and can cause a deadly human brain disease in people who eat tainted meat. It was sent to the USDA lab in Iowa for further testing.
• ___

• WASHINGTON (AP) -- The Supreme Court is questioning Arizona's tough "show me your papers" law aimed at driving illegal immigrants out of the state, amid objections from the Obama administration that states have a limited role to play in immigration policy.
• The court's review of the Arizona law includes a provision that requires police, while enforcing other laws, to question a person's immigration status if officers suspect he is in the country illegally. In the final argument of the term Wednesday, the justices will explore whether lower federal courts were right to block that and other key provisions.
• The administration challenged the law in federal court soon after Arizona Gov. Jan Brewer signed it two years ago. Alabama, Georgia, Indiana, South Carolina and Utah passed similar laws, parts of which also are on hold pending the high court's decision.
• The court hearing comes as presumptive Republican nominee Mitt Romney is

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