U.S. Ambassador Samantha Power on Sunday told ABC's "This Week" that Iran's selection of Hamid Aboutalebi (ah-boo-TAH'-leh-bee) to be its United Nations envoy is not acceptable. She says Tehran should pick someone else.
Iran has rejected that suggestion following Washington's refusal to give Aboutalebi a visa to enter the United States.
Aboutalebi was a member of the group responsible for the 1979 takeover of the U.S. embassy in Tehran that held 52 Americans hostage for 444 days. Aboutalebi has insisted his involvement in the Muslim Students Following the Imam's Line was limited to translation and negotiation.