Regulators taking another look at costs of Wall St. safety rule

By Patrick Rucker and Jonathan Spicer WASHINGTON/NEW YORK (Reuters) - Just as memories of the financial crisis are fading and tough new banking regulations are beginning to bite, some current and former regulators wonder whether one of the rules is too much of a burden for markets and taxpayers. Because this so-called Supplementary Leverage Ratio (SLR) rule applies to all bank assets including Treasuries, it has made owning that ultra-safe government debt and related trades more expensive. Wall