(Bloomberg) -- The Biden administration will restore sanctions on Venezuela’s energy sector if the country upholds its ban on an opposition candidate from running for president, two US officials said, a move that risks chilling recent efforts to improve ties between the two adversaries.Most Read from BloombergTraders Line Up for ‘Once-in-a-Generation’ Emerging Markets BetBlackstone Is Building a $25 Billion Empire of Power-Hungry Data CentersTrump Cash Stockpile at Risk From $450 Million Dual Ve