File photo of a flag reflected on the window of the Fitch Ratings headquarters in New YorkBy means of Daniel Bases NEW YORK (Reuters) – Fitch Ratings warned on Tuesday it may well reduce the sovereign credit standing of america from AAA, citing the political brinkmanship over raising the federal debt ceiling. "Even though Fitch continues to imagine that the debt ceiling can be raised soon, the political brinkmanship and lowered financing flexibility might raise the chance of a U.S. default," the firm stated in a commentary. The firm put its opinion concerning the creditworthiness of U.S. …