Rep. Frank Wolf (R-Va.) on Tuesday called on the Obama administration to end aid to Tunisia since that country had refused for several weeks to grant the FBI access to a suspect in the Sept. 11 attack on the U.S. mission in Benghazi, Libya.

The suspect, Ali Harzi, was captured in Turkey and sent back home in October. Tunisian authorities have charged him with belonging to a terrorist organization.

FBI agents in Tunisia were denied access to him for five weeks before finally meeting with him late last month, at which point he refused to talk to them.

“These unnecessary and unfounded delays are inexcusable and demonstrate that Tunisia is no friend or ally of the United States,” Wolf wrote in a letter to Secretary of State Hillary Clinton. “How is it possible that Tunisia is receiving more than $300 million in taxpayer dollars while simultaneously obstructing FBI efforts to investigate the death of four Americans?”