By Khushi Mandowara and Deena Beasley (Reuters) – Florida on Friday won authorization from the U.S. Food and Drug Administration (FDA) to directly import prescription drugs from Canada, the first state to get such approval for a strategy that could lower prices for medicines. Drug costs in the U.S. are higher than in Canada and other countries where government-run healthcare systems negotiate prices for individual prescription drugs. But importation faces challenges. In the past, Canada’s government has opposed any U.S. plans to buy Canadian prescription drugs, citing threats to the country’s …