Miami-Dade Detective Douglas Bartelt and narcotics detector canine Franky give a demonstration in Miami in 2011. Alan Diaz/AP hide caption

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Miami-Dade narcotics detector canine Franky, who came out of retirement to give a demonstration, sniffs marijuana in Miami in 2011. Franky's supersensitive nose is at the heart of a question being put to the U.S. Supreme Court: Does a police K-9's sniff outside a house give officers the right to get a search warrant for illegal drugs? Alan Diaz/AP hide caption

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Republican presidential candidate Mitt Romney speaks about the Supreme Court ruling on health care in Washington on June 28. Charles Dharapak/AP hide caption

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Tom Stemberg, founder of Staples, speaks in support of Mitt Romney on the final day of the Republican National Convention in Florida on Aug. 30. Stan Honda/AFP/Getty Images hide caption

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While lots of labels tout their lack of genetically modified ingredients, if California's Prop. 37 succeeds, foods containing GMOs would have to be labeled. Paul Sakuma/AP hide caption

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A marijuana bud at a marijuana dispensary in Denver. Colorado, Oregon and Washington could become the first to legalize marijuana this fall. Ed Andrieski/AP hide caption

itoggle caption Ed Andrieski/AP