Moody's on Wednesday put the triple-A credit rating of the United States on review for possible downgrade, noting the possibility that the country's debt limit will not be raised in time to avoid a default on US Treasury debt obligations.More headlines from FoxBusiness.com:http://email.foxnews.com/t?ctl=11992:7469D46E31DAE9CAD86A2FE14F9B08A4&------------------------------------------------------