Canada

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Nexen has an oil sands facility near Fort McMurray, Alberta, Canada. Nexen is being acquired by China National Offshore Oil Co. in a $15-billion deal that, if successful, will be China’s largest ever overseas acquisition. For Canadians, more drilling means more jobs and tax revenue. (Associated Press)

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Josh Binstock, left, from Canada and his teammate Martin Reader, right, celebrate after defeating team Great Britain in their Beach Volleyball match at the 2012 Summer Olympics, Saturday, July 28, 2012, in London. (AP Photo/Petr David Josek)

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Canada’s Helen Upperton and Shelley-Ann Brown in the women’s bobsled world championships in February in Lake Placid, N.Y., site of 1932 and 1980 Winter Olympics. (Associeted Press)

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Lafayette brick 40/32 label, seen during an antique fireworks auction. The Moyer collection includes fireworks made in the United States, China, Macau, England, India and Canada. Some of the earliest items are Chinese black-powder firecrackers from the early 1800's. (Rod Lamkey Jr./The Washington Times)

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Blazing Star 100 box of firecrackers, seen during an antique fireworks auction. The Moyer collection includes fireworks made in the United States, China, Macau, England, India and Canada. (Rod Lamkey Jr./The Washington Times)

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George Moyer's 50-year collection of fireworks-related items, especially label art, is arrayed around him at Morphy Auctions in Denver, Pa., Mr. Moyer has written two books on the subject and had items made in the U.S., China, Macau, England, India and Canada. (Rod Lamkey Jr./The Washington Times)

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Spectators and press gather June 15, 2012, to see the 550-meter tightrope stretching across Niagara Falls in Niagara Falls, Ontario, Canada. Nik Wallenda was expected later that evening to attempt to walk the length of the rope. (Associated Press/The Canadian Press)

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Secretary of Homeland Security Janet A. Napolitano says the U.S.-Canada border "presents unique security challenges based on geography, weather and the immense volume of trade and travel." (Associated Press)

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**FILE** A U.S. Customs and Border Protection officer walks through a line of cars at a crossing from Canada near Blaine, Wash., on July 21, 2009. (Associated Press)

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Mignon Tsai, 12, of Abbotsford, British Columbia, Canada, (left) Jennifer Mong, 12, of St. John's, Newfoundland, Canada (center) and Siddharth Kulkarni, 13, of San Jose, Calif., (right) relax during a commercial break during the semifinals of the 2012 Scripps National Spelling Bee at the Gaylord National Resort and Convention Center in National Harbor, Md., Thursday, May 31, 2012. (Rod Lamkey Jr/The Washington Times)

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**FILE** A pair of French tourists view the Horseshoe Falls from Table Rock in Niagara Falls, Ontario, Canada, on Feb. 1, 1996. (Associated Press)

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Booming oil production in the Northern Plains is drawing workers in search of jobs, but the increase in crime that has come with it — ranging from drug trafficking and gun offenses to prostitution — is a challenge for law enforcement in the U.S. and Canada. (Associated Press)