David Sirota Gov. Cuomo is threatening retribution against Dems demanding answers about underreported COVID deaths and his effort to help an industry group shield nursing home execs. The biggest political scandal in America right now is playing out in New York, where Gov. Andrew Cuomo is in a lot of trouble — and rightly so. The Democratic governor did not merely wildly mismanage his state’s response to the COVID emergency, while netting himself a lucrative book deal and an Emmy. He did something worse. In the middle of a public health emergency,…