Michelle Obama has high approval rating, cabinet members do not First Lady Michelle Obama signs copies of her book "American Grown: The Story of the White House Kitchen Garden and Garden Across America" at a local bookstore in Washington June 12. WASHINGTON, Dec. 27 (UPI) -- While President Barack Obama's cabinet is getting mixed reviews from U.S. citizens, first lady Michelle Obama's opinion rating is high, a poll indicated. The CNN/Opinion Research Corporation International poll, conducted Dec. 17-18 and released Wednesday, indicated 73 percent of Americans say they approve of the way Michelle Obama has handled her job as first lady, CNN reported. Thirty percent of respondents said they disapprove of her. Since 2008, the first lady has spearheaded a number of campaigns, including the "Let's Move!" program to combat childhood obesity by encouraging healthier eating habits and exercise, and "Joining Forces," which is aimed at decreasing unemployment among military veterans. Secretary of State Hillary Clinton also received high marks with 66 percent of poll respondents saying they approve of the job she is doing. About 30 percent of respondents said they disapprove of Clinton. Meanwhile, other members of the president's cabinet received less favorable marks; just 36 percent of respondents said they approve of the work Treasury Secretary Tim Geithner is doing -- 42 percent said they disapproved and 21 percent said they were unsure -- and 54 percent of respondents said they approve of the way Vice President Joe Biden is handling his job. Forty percent of respondents said they disapprove of Biden. The president's approval rating was at 52 percent with 43 percent saying they disapprove of the way Obama was handling his role. The CNN/ORC International poll of 620 Americans had sampling error of 4 percentage points.