Marilyn Geewax, senior business editor, NPR
Ron Elving, senior Washington editor, NPR
Elaine Chao, Secretary of Labor under President George Bush
Madeleine Albright, Secretary of State under President Bill Clinton
President Obama nominated Jack Lew, his current chief of staff, for Treasury Secretary today. Former cabinet members explain what it takes to put together a good cabinet, and how to get the members to work together.