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US Congress hears calls for drone safeguards

A small drone is seen during a hearing of the US Senate Judiciary Committee on Capitol Hill, on March 20, 2013, in Washington. Lawmakers and advocates on Wednesday called for safeguards to be placed on the domestic use of drones in order to protect the prLawmakers and advocates on Wednesday called for safeguards to be placed on the domestic use of drones in order to protect the privacy of Americans.