I think James Joyner nicely captures the dynamics at work when trying to investigate whether or not someone can engage in criminal behavior—in this case, make a contribution to a political campaign under an assumed name. I would only make the point that I doubt Mark Kleiman would object to the use of similar tactics by those investigating airport security or, for that matter, that perennial local TV sweeps favorite of sending an investigative reporter undercover into the meat department of a local grocery store to document all the horrifically bad things that go on behind closed doors—or, for that matter, would object to anyone bragging about having done so, even if violating the law (which I am pretty sure both of these other examples involve).