In this Monday, Oct. 31, 2011, file photo, a French gendarme and French custom officer check vehicles, in La Turbie, southeastern France, near the Franco-Italian border, in spite of the EU's passport-free zone Schengen, as security measures are taken ahead of the G20 Summit of Cannes. France will reinstate controls on its borders — normally open to other countries in Europe's free-travel zone — for the period around a major U.N. climate conference in Paris, the interior minister said Friday, Nov. 6, 2015. (AP Photo/Lionel Cironneau, File)
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