U.S. officials responsible for promoting human rights in other countries have found it harder to do since the Abu Ghraib prison scandal broke. Lorne Craner was a top human rights official in the Bush administration. He has just left office. He says that after Abu Ghraib, he started most meetings in the Middle East with an apology for prison abuse at the hands of U.S. soldiers. Human rights advocates outside the government say Abu Ghraib was devastating for U.S. credibility. NPR's Michele Kelemen reports.