For most of the past decade, nonbank residential lenders have eschewed the idea of owning or being affiliated with a federally insured depository for fear of being over-regulated in an already heavily regulated business. But the tide could be turning. Movement Mortgage CEO Casey Crawford this spring bought a controlling interest in First State, a small Virginia bank. Separately, fintech lender Social Finance recently filed an application with the Utah Department of Financial Institutions to open a depository there. SoFi, which branched out from its consumer and student loan business into mortgages, also filed an application with the Federal Deposit Insurance Corp. for deposit insurance coverage. For now, both Crawford – a former professional football player – and the San Francisco-based SoFi aren’t...