JANUARY 23, 2010 Obama's Lead Blocker on Wall Street UBS Executive Advises President on Economic Issues Even as Feud Between White House, Finance Industry Heats Up By NEIL KING JR. President Barack Obama's long feud with Wall Street is getting only hotter. He is pushing a regulatory revamp that would rein in the size and power of the big banks, after jabbing at "fat cat bankers" and denouncing Wall Street greed. But Mr. Obama has at least one buddy in the banking business: a former University of Pennsylvania fullback and ex-Salomon Brothers bond trader who now serves as an outside...