The United States has continued to support the full implementation of the Good Friday Agreement and has demonstrated its readiness to assist the process in any way . On June 10 , 2003 , President George W. Bush announced his intention to designate Ambassador Richard N. Haass as the Special Envoy . Haass was an active Envoy . In 2001 , within a week of the September 11 attacks , Haass warned Irish Republicans that the suspected links between the IRA and Colombian terrorist groups could have " potentially serious consequences for the role of the United States in the peace process " . Later , Haass attacked then Ulster Unionist Party leader David Trimble for setting a deadline for pulling out of power-sharing , accusing him of adding to a sense of crisis
September 11 attacks
September 11 attacks
United States Special Envoy for Northern Ireland