Ashton Carter, the former second-in-command at the Pentagon, is President Barack Obama's top choice to replace outgoing Defense Secretary Chuck Hagel, several administration officials told CNN Tuesday. Hagel announced his resignation last week, but has said he will stay on until his successor is confirmed by the Senate. Check out other members of Obama's cabinet:
Loretta Lynch, the U.S. attorney in Brooklyn, is expected to be President Barack Obama's pick for attorney general, U.S. officials briefed on the matter told CNN. Lynch would succeed Attorney General Eric Holder, who announced his resignation in September.
Vice President Joe Biden. Biden was previously a senator from Delaware.
Secretary of State John Kerry. Kerry was previously a senator from Massachusetts and chair of the Senate Foreign Relations Committee.
Secretary of the Treasury Jack Lew. Lew was previously Obama's White House Chief of Staff, and was director of the Office of Management and Budget before that.
Secretary of the Interior Sally Jewell. Jewell was previously president and chief executive of outdoor recreation company REI. She replaced former Secretary of the Interior Ken Salazar.
Secretary of Agriculture Tom Vilsack. Vilsack was previously governor of Iowa.
Secretary of Commerce Penny Pritzker. One of the wealthiest women in America and an heiress to the Hyatt hotel fortune, she previously headed the investment firm PSP Capital Partners and an associated property firm, Pritzker Realty Group. Pritzker was national finance chairwoman of Obama's 2008 presidential campaign and national co-chairwoman of his 2012 campaign.
Secretary of Labor Thomas Perez. Perez formerly oversaw the Labor Department's civil rights division.
Secretary of Health and Human Services Sylvia Mathews Burwell. Burwell was previously the White House Office of Management and Budget director.
Housing and Urban Development Secretary Julian Castro. He previously served as mayor of San Antonio.
Secretary of Transportation Anthony Foxx. Formerly the mayor of Charlotte, N.C., he succeeded Ray LaHood in the position.
Secretary of Energy Ernest Moniz. Moniz is a physicist who has served on the faculty of MIT since 1973, with a research focus on energy technology and policy.
Secretary of Education Arne Duncan. Duncan was previously CEO of Chicago Public Schools.
Secretary of Veterans Affairs Robert McDonald. He is a West Point graduate and former CEO of Procter & Gamble.
Homeland Security Secretary Jeh Johnson. As the Pentagon's former top lawyer, Johnson was appointed the Defense Department's General Counsel in 2009 after serving on Obama's transition team.
White House Chief of Staff Denis McDonough. McDonough was previously Obama's chief foreign policy advisor, a senior fellow at the Center for American Progress and an aide to the House International Relations Committee.
Environmental Protection Agency Administrator Gina McCarthy. McCarthy previously served as assistant administrator in charge of air and radiation at the EPA.
Office of Management and Budget Director Shaun Donovan. He previously led the Department of Housing and Urban Development.
U.S. Trade Representative Michael Froman. Froman was previously deputy national security adviser for international economic affairs. Before working for the White House, Froman was an executive at Citigroup and in the 1990s served as chief of staff to Treasury Secretary Robert E. Rubin.
U.S. Ambassador to the United Nations Samantha Power. Power was previously a special assistant to the president and senior director for multilateral affairs and human rights at the National Security Council.
Council of Economic Advisers Chairman Jason Furman. He previously served as assistant to the president for economic policy and as principal deputy director of the National Economic Council.
Small Business Administration Administrator Maria Contreras-Sweet. She served as the secretary of the California Business, Transportation and Housing Agency before founding ProAmérica Bank.