In 1991 Joseph returned to the "Haïti Observateur" where he remained until 2004, when he was again appointed Chargé d'Affaires in Washington, DC. In 2005 acting president Boniface Alexandre chose Joseph to be Haiti's ambassador to the United States. In the aftermath of the catastrophic January 12, 2010 earthquake in Haiti, Joseph played an active role in mobilizing the international community's response to Haiti.