Congress and Baseball Hearings

With so many things going on, isn't there something more important our representatives in congress can do other than nit-pick about baseball players using performance-enhancing drugs? Certainly there must be something out there our representatives can deal with that will do the public much more good.

Is there some kind of constitutional precedent which makes these hearings necessary? I can't remember a clause in that historic document outlining the Federal Government's power to regulate professional sports leagues.

Oh, wait - this is another instance of Congress doing something other than wasting money, intruding into my life and raising my taxes ...