The Office of the Wisconsin Insurance Commissioner has launched a preliminary investigation into lender-paid mortgage insurance, a revelation that is causing additional unease at private MIs. Sources confirmed to Inside Mortgage Finance this week that insurance regulators in the state are looking at what one official called discounting “practices” for the product. He added: “Wisconsin is asking them to name names: ‘Who are you giving discounts to, on what basis, etc.” This official, who did not want to go on the record regarding the matter, said...