BOSTON (Reuters) - U.S. financial regulators took a one-two punch on Friday that might leave their efforts to regulate the $1.3 trillion hedge fund industry in shambles. "The regulatory landscape that the SEC has so carefully cultivated is now seriously in question," observed Jedd Wider, a partner at law firm Morgan Lewis. The U.S. Securities and Exchange Commission will now have to go back to drawing board if it truly wants to put a tighter leash on an industry in which assets have doubled in five years. And that might take a long time, lawyers and investment managers said. Early...