The District of Columbia has become the latest jurisdiction to go after wealthy occupants of second homes who spend part of the year in D.C. but pay income tax elsewhere. A bill before the D.C. Council, B26-0802, would impose increased property taxes on residential properties worth roughly $2.6 million or more that are not rented at market rates or used as a primary residence. Here is what the bill does, why D.C. needed a new tax, and how it relates to D.C.'s uniquely worded residency test.