Next wave of U.S. bank mergers may be on horizon By: MarketWatch July 01, 2010 at 15:19 PM EDT Increased regulatory costs and stronger capital requirements could force a new round of U.S. bank consolidation over the next 12 to 18 months. Read More >> Related Stocks: BB&T Corp Boston Pvt Finl Hld Heritage Financial Home Bancshares Inc Iberiabank Corp Macy's PNC Financial Services U.S. Bancorp Umpqua Holdings Corp Western Alliance Bancorp