US President Barack Obama has pledged a new push to close the prison at Guantanamo Bay, Cuba, amid a growing prisoner hunger strike there.
At the White House, Mr Obama said the detention centre was "contrary to who we are" and harmful to US interests.
He cited recent convictions of terror suspects to argue the civilian justice system was adequate for such trials.
Congress has blocked efforts to close the prison, but Mr Obama said he would renew discussions with lawmakers.
Mr Obama told reporters he had asked a team of officials to review operations at Guantanamo Bay and said he was not surprised there were problems there.