On April 25, 2013, Carter attended the dedication of the George W. Bush Presidential Library and Museum with her husband and other former First Ladies and Presidents. In October 2013, Carter spoke about her confidence in the American people and her lack of confidence in the government on the issue of the income gap in the United States. Carter had "one of the greatest disappointments" corrected when learning from Health and Human Services Secretary Kathleen Sebelius that the Obama administration had passed a mental health insurance rule. She was "shaking" after learning about the government rules that required equal treatment for mental health upon hearing the announcement in November 2013. She and her husband were saddened by the death of Nelson Mandela.