May 23 (Bloomberg) — U.S. bankers and insurers are trying to use trade deals, which can trump existing legislation, to weaken parts of the Dodd-Frank Act designed to prevent a repeat of the 2008 financial crisis. While the companies say they are seeking agreements that preserve strong regulations and encourage economic growth, their effort is drawing fire from groups who argue that Wall Street wants to make the trade negotiations a new front in its three-year campaign to stop or alter the law. Senator Elizabeth Warren, a Massachusetts Democrat who sits on the Banking Committee, said in a May 7 [Read more...]