S&P affirms U.S. investment-grade ratings after presidential election

(Reuters) - Ratings agency Standard & Poor's affirmed the United States' investment-grade 'AA+/A-1+' rating on Wednesday, a day after the presidential election, while maintaining its stable outlook. Donald Trump won the U.S. presidential election in a stunning upset, and will take office in January, with the Republicans maintaining majority control of the House of Representatives and the Senate. "We assume the longstanding institutional strengths and robust checks and balances of the U.S. wi