A bill being drafted by Democratic and Republican senators could force some large banks in the U.S. to adopt capital requirement standards higher than those required by Basel III rules. Sens. Sherrod Brown, D-Ohio, and David Vitter, R-La., are poised to introduce the bill. Karen Shaw Petrou of Federal Financial Analytics raised concerns about the measure. "I view it as a radical view of how American banks should be restructured that seems to disregard the role of the [Federal Deposit Insurance Corp.] coverage, prudential regulation and the totally different structure of the 2013 economy," Ms. Petrou said.