There are parallels with Ahmed Wali Karzai here too. Quang, special military adviser to President Nguyen Van Thieu, was widely believed to have been a heroin trafficker. This led to considerable friction between the CIA, which valued Quang as an asset, and the U.S. military, which saw him as a crook. Quang moved to the U.S. after the fall of Saigon; after a trip to Canada in 1975, he was barred from returning to the U.S. until 1989, when the State Department cleared him of all drug charges.
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