List of Obama Administration 'Power Couples' Grows

Move over, Bill and Hillary. You've got company. There's a new cadre of power couples in town.

Cass Sunstein's likely confirmation to head the White House Office of Information and Regulatory Affairs makes him the latest spouse to join his partner in the Obama administration.

Sunstein -- who also has been mentioned as a possible replacement for Supreme Court Justice David Souter -- is married to Samantha Power, director of multilateral affairs on the National Security Council.

Sunstein and Power, who met while working on President Obama's campaign, are hardly alone, and that's not a big surprise, said Larry Sabato, director of the Center for Politics at the University of Virginia.

"This is common today because you have so many professional couples," Sabato told FOXNews.com, saying part of the reason is that women are increasingly involved in traditionally male-dominated fields.

"Often when you make an offer to somebody, you have to make an offer to their spouse," he said. 

Sabato said such staffing does create the "potential for a conflict of interest of some sort," but he said it's up to the White House and individual employees to "make sure a line isn't crossed."

"The White House counsel is the one responsible for enforcing the ethics rules," he said.

The following is a list of the administration's top power couples:

-- Health and Human Services Secretary Kathleen Sebelius and federal magistrate judge Gary Sebelius

Kathleen Sebelius was handed a large portfolio late last month in the middle of the H1N1 outbreak. Her husband, whom President Bush nominated in 2002 to the U.S. District Court for Kansas for an eight-year term, will face a new appointment by Obama in 2010. The two have been married for more than 30 years.

-- Undersecretary of Defense for Policy Michele A. Flournoy and Deputy Secretary of the Department of Veteran Affairs W. Scott Gould

Flournoy, who co-founded the Center for a New American Security, was appointed by Obama for the senior Pentagon position in January. Her husband, Gould, worked for the Clinton administration -- in both the Treasury and Commerce departments -- and served as an intelligence officer in Iraq.

-- Jane H. Lute, Deputy Secretary of the Homeland Security Department, and Lt. Gen. Douglas E. Lute, coordinator of Iraq and Afghanistan policy on the National Security Council

Bush nominated the lieutenant general in 2007 to serve in his current role -- dubbed the "war czar" -- and he has retained that position under Obama. His wife, Jane, has worked for both the United Nations and National Security Council and is now second in command to Secretary Janet Napolitano.

-- Deputy Secretary of State James B. Steinberg and Sherburne B. Abbott, associate director of the White House Office of Science Technology Policy

Steinberg served as President Clinton's deputy national security adviser and had a leading role in the Obama transition team's policy working group on national security. His wife, Sherburne "Shere" B. Abbott, served as the director of the Center for Science and Practice of Sustainability at the University of Texas.

-- White House Counsel Gregory Craig and Margaret "Derry" Noyes, an art director and designer of stamps for the U.S. Postal Service

Craig, who represented Clinton during his impeachment, held a leading role in producing Obama's first four executive orders and in assisting the transition team during the pay-to-play Illinois Senate seat scandal. Craig's wife, Noyes, has worked for the U.S. Postal Service for several years.