In his latest broadside against the banking industry, New York Attorney General Eric Schneiderman is alleging that the nation's largest banks use the Mortgage Electronic Registration System to evade public filings, shortchange localities of $2 billion in fees and compromise homeowners' interests. A complaint filed on Friday describes MERS, a Virginia-based digital mortgage tracking service, as "a shell company" established as a stealth mortgagee for banks, particularly JPMorgan Chase, Bank of America and Wells Fargo.