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Demonstrators march past the US Capitol during a rally to call for the closing of the Guantanamo Bay detention center on January 11, 2013 on Capitol Hill in Washington. MANDEL NGAN/AFP/Getty Images

Hooded demonstrators march infront of the Russell Senate Office Building to call for the closing of the Guantanamo Bay detention center on January 11, 2013 on Capitol Hill in Washington, DC. MANDEL NGAN/AFP/Getty Images

Protestors hold placards during a rally to call for the closing of the Guantanamo Bay detention center on January 11, 2013 in front of the US Supreme Court on Capitol Hill in Washington. MANDEL NGAN/AFP/Getty Images

A hooded demonstrator takes part in a rally to call for the closing of the Guantanamo Bay detention center on January 11, 2013 in front of the US Supreme Court on Capitol Hill in Washington. MANDEL NGAN/AFP/Getty Images

Hooded demonstrators take part in a rally to call for the closing of the Guantanamo Bay detention center on January 11, 2013 in front of the US Supreme Court on Capitol Hill in Washington, DC. MANDEL NGAN/AFP/Getty Images

Demonstrators, dressed as detainees, protest against the U.S. military detention facility in Guantanamo Bay, Cuba, in front of the U.S. Supreme Court in Washington, Friday, Jan. 11, 2013. The protest marks the 11th anniversary of the first detainees being jailed at Guantanamo Bay. (AP Photo/ Evan Vucci)

Police stand guard as hooded demonstrator take part in a rally to call for the closing of the Guantanamo Bay detention center on January 11, 2013 in front of the US Supreme Court on Capitol Hill in Washington. MANDEL NGAN/AFP/Getty Images

Human rights activists gather for a rally on the Ellipse, near the White House in Washington, Friday, Jan. 11, 2013. The rally marke the 11th anniversary of the first detainees being jailed at the U.S.-controlled detention facility in Guantanamo Bay, calling on President Barack Obama to close Guantanamo. (AP Photo/Manuel Balce Ceneta)

Human rights activists from left, Michelle Ringuette, Kelly Mitchell, Felipe Pereira and Rebecca Elliott, hold a banner with a picture of Saudi national Guantanamo detainee Shaker Aamer, during a rally near the Ellipse, near the White House in Washington, Friday, Jan. 11, 2013. The rally marked the 11th anniversary of the first detainees being jailed at the U.S.-controlled detention facility in Guantanamo Bay, calling on President Barack Obama to close Guantanamo. (AP Photo/Manuel Balce Ceneta)

Campaigners gather outside the U.S. Embassy in London, holding various signs against the prison and wearing US President Obama masks, to mark the 11th anniversary of the opening of Guantanamo Bay U.S. prison in eastern Cuba, Friday, Jan. 11, 2013. (AP Photo/Sang Tan)

Campaigners light a symbolic line of candles as they gather outside the U.S. Embassy in London to mark the 11th anniversary of the opening of Guantanamo Bay U.S. prison in eastern Cuba, Friday, Jan. 11, 2013. (AP Photo/Sang Tan)

Campaigners gather outside the U.S. Embassy in London, holding various signs against the prison and some wearing US President Obama masks, to mark the 11th anniversary of the opening of Guantanamo Bay U.S. prison in eastern Cuba, Friday, Jan. 11, 2013. (AP Photo/Sang Tan)