Schwalb wrote that while #Congress retains the authority to repeal city laws, “in our view, Congress did not do so here.” The disapproval, he said, merely “operates as an expression of Congress’s unfavorable opinion of [DC’s tax policy] but not as a repeal.”
As the #federal district, #DC has little leverage going up against the federal government or Congress, which under the #Constitution has full authority over the city & its laws.