While most tax-paying Americans saw their overall tax bill decline under President Trump's tax-reform package - and American corporations pay substantially less as well - there's no question that homeowners in blue states, a group that includes some of the most affluent people in the county, lost out. By capping how much of an individual's property and income taxes can be written off their federal tax bill, as well as lowering the threshold for mortgages that qualify for interest deductions to $750,000 from $1 million (one reason why the luxury market in places like Greenwich has gotten whacked), Trump managed to exact his revenge on the blue-staters who supported his presidential rival back in 2016.