The Obama administration continues to deny UN requests to investigate conditions at Guantanamo Bay and other US prisons overseas. The Washington Post reports at least two human rights investigators were recently turned down after asking to visit Guantanamo. A top UN torture official also requested a meeting with Secretary of State Hillary Clinton but was denied. One researcher says though the Obama administration has banned CIA torture techniques, it’s avoiding a legal obligation under the 1984 Convention Against Torture to investigate unresolved allegations. Six months after the Bush administration left office, the UN officials say the investigations are particularly urgent since a statute of limitations on prosecuting alleged torturers expires as early as next year.