Fitch Ratings, which stripped the US of its top credit grade two months ago, said a potential government shutdown after Representative Kevin McCarthy’s ouster as House Speaker won’t have an effect on the nation’s rating. The comments came after McCarthy lost his leadership post following a revolt by Republican party hardliners over his compromise with Democrats to avert a shutdown last weekend. Analysts, including those at Goldman Sachs Group Inc., said the ouster elevates the risk of a shutdown next month. “We expect that political brinkmanship around government funding negotiations will remain tense and a shutdown ... (full story)