U.S. Ambassador to Zimbabwe Christopher Dell on November 9, 2005, and expressed his "extreme displeasure" with comments Dell made a few days earlier in Mutare: Dell had said government corruption had led to food shortages. Mugabe replied that Dell could "go to hell." Dell left Zimbabwe for Washington, D.C., United States, on November 9 for consultations after meeting with Mumbengegwi. Mugabe visited Washington DC informally in September 1980, and on official working visits in September 1983, July 1991 and 1995, meeting with Presidents Carter, Reagan, Bush and Clinton respectively. He has also led a Zimbabwean delegation to the UN on several occasions, most recently in 2006. Vice-president George H.W. Bush visited Harare in November 1982 on a trip to several African countries. Prime Minister Morgan Tsvangirai met with President Obama on June 12, 2009, at the White House. After Morgan Tsvangirai, Mugabe's rival and leader of the Movement for Democratic Change, became Prime Minister of Zimbabwe under a power-sharing agreement, the Barack Obama administration extended its congratulations to Tsvangirai, but said that the U.S. would wait for evidence of Mugabe's co-operation with the MDC before it would consider lifting its sanctions. In early-March 2009, Obama proclaimed that US sanctions would be protracted provisionally for another year, because Zimbabwe's political crisis is as yet unresolved. He explained in a statement to Congress, Principal U.S. officials Ambassador – Brian A. Nichols Deputy Chief of Mission—Jennifer Savage USAID Mission Director—Stephanie Funk Political/Economic Chief—Yvonne Gonzales Public Affairs Officer—David McGuire Defense Attaché—LTC Jeffrey Schroeder Diplomatic missions U.S. Embassy (Chancery), Harare U.S. Agency for International Development, Harare See also US and UK diplomats detained in Zimbabwe References Agence France-Presse. "Obama extends Zim sanctions." News24, March 5, 2009. Notes External links History of Zimbabwe - U.S. relations Zimbabwe Bilateral relations of Zimbabwe