George W. Bush abused the tool of signing statements, in ways that could conceivably "be declared" unconstitutional, say, in a suit against a federal enforcement agency for "dereliction of duty" for not enforcing a clear legislative enactment in the way the legislature dictated but instead according to an interpretation engrafted onto the law by presidential fiat. In the real world of law and politics where most of us adults live, the concept of "unconstitutionality," further, is an intellectual category not limited to the actions or pronouncements of courts. Take, for example, the separation of powers and the authority to wield stated powers. There is an ebb and flow to this notion, maybe illustrated by the president's war powers and the Congressional enactments bearing on them. More frequently than not, an attempted usurpation by one branch is settled politically, not legally, yet the rights being redressed are constitutional ones. This set-up has gotten formal recognition by the Supreme Court in the concept of justiciability governing "political questions," as one example.