Brazil leader's credibility tested as she woos U.S. investment

When she visits New York on Monday, President Dilma Rousseff will have a tough time convincing Wall Street her weakened government can pull Brazil out of a stall and save the once-booming nation's investment-grade credit rating. Many doubt her willingness to go to the mat against anti-austerity forces in her own leftist Workers' Party to rein in the country's gaping fiscal deficit. While many U.S. companies are still betting on Brazil's long-term growth prospects given the hu