Dilma Rousseff

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Brazilian President Dilma Roussef addresses the 68th session of the U.N. General Assembly on Tuesday, Sept. 24, 2013, in New York. (AP Photo/Richard Drew)

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Environmental activists, one portraying Brazilian President Dilma Rousseff holding a banner symbolizing "dirty money" made from fossil fuel subsidies, protest on the final day of the United Nations Conference on Sustainable Development, or Rio+20, in Rio de Janeiro, Brazil, Friday, June 22, 2012. (AP Photo/Andre Penner)

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**FILE** President Obama meets with Brazilian President Dilma Rousseff on April 9, 2012, in the Oval Office of the White House. (Associated Press)

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ASSOCIATED PRESS Brazilian President Dilma Rousseff is contending with a scandal involving her chief of staff, issues about her own health and the intervention of her predecessor in a legislative issue at the same time she is managing a slowing economy and high inflation.

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Brazilian President Dilma Rousseff

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President Obama greets Brazilian President Dilma Rousseff after their joint news conference Saturday at the Palacio do Planalto in Brasilia, Brazil. Mr. Obama welcomed Brazil's rise as an economic power and said the U.S. will be an eager customer for oil exports. (Associated Press)