In order of succession to the Presidency:
Department of State
Department of the Treasury
Department of Defense
Department of Justice
Department of the Interior
Department of Agriculture
Department of Commerce
Department of Labor
Department of Health and Human Services
Department of Housing and Urban Development
Department of Transportation
Department of Energy
Department of Education
Department of Veterans Affairs
Department of Homeland Security
The following positions have the status of Cabinet-rank:
White House Chief of Staff
Environmental Protection Agency
Office of Management & Budget
United States Trade Representative
United States Mission to the United Nations
Council of Economic Advisers
Small Business Administration