A new accounting standard that changes that way banks reserve for loan losses might not sound that earth-shattering but it could lead to a capital shortfall as large as $70 billion across the banking industry. Josh Siegel, CEO of StoneCastle Partners, an investor and adviser to community banks, and Ethan Heisler, president of the Bank Treasury Newsletter, discuss the impact of new standard, dubbed the current expected credit loss model, or CECL.