FAP, May 9 / PRNewswire-FirstCall-Asianet /-- U.S. Treasury Secretary Yellen contacted the CEO of many companies to warn of the risk of debt default in the United States; if the pressure on banks could lead to contagion, regulators are ready to use the same tools as in the past. The government intervened strongly to reassure depositors and increase bank liquidity, and banks now have stable deposits; as the employment report shows, the US economy is still "sound"; a recession cannot be ruled out, but this is not the most likely path.