Track and field has had severe repercussions in place for many years now for steroid users, but baseball didn't have ANY policy about it until just a few years ago, so I don't think the lack of retroactive punishments in baseball can really be compared to track and field.

As far as lying to investigators, it'll certainly be interesting to see what happens with Clemens. It seems extremely likely that the whole thing with him vs. his trainer will end up with one or the other being totally discredited for lying in a huge way, and quite possibly under oath, so let's see how that one plays out.