(snip) The problem is not, as some commentators have claimed, a legal doctrine known as "standing" -- a rule that requires that a person who comes to court must have a proper legal interest at stake in the litigation. Rather, the biggest barrier is a principle of judicial restraint known as "the political question doctrine." A key idea underlying this doctrine is that the Constitution itself, in its text or spirit, sometimes takes a certain sort of constitutional question away from ordinary courts and makes some other decision-maker the real judge -- a special court for a special question. In...