 Although, Richard Nixon enjoyed firmly strong relations with Bhutto and was a close friend of Bhutto, the graph of relation significantly went down under the Presidency of Jimmy Carter.Carter, an anti-socialist, tightened the embargo placed on Pakistan and placed a pressure through the United States Ambassador to Pakistan, Brigadier-General Henry Byroade.The socialist orientation, and Bhutto's proposed left-wing theories, had badly upset the United States, further clinging the bell tolls in the United States as fearing Pakistan's loss as an ally in the Cold war.