:> So, in other words, this is such a sticky problem that we should have 
> government make all the decisions?  Somehow, that seems less than ideal to 
> me.
No, you should know me better than that. I generally view authoratarian solutions as poor. The two very *fuzzy* points, that I belive *society* needs to discuss are -- Is any germline engineering justifyable? and If you can do germline engineering -- where do you stop? (society can impose behavior norms where governments would never tread -- even though they may be wrong!!)
> Or do you really want to see a regulatory agency defining "enhancement", 
> "treatment", "necessity" and so forth according to whatever political 
> forces happen to apply at the time?
I think a "regulatory agency" would never really work. I think more awareness on the part of perspective parents on the pressures, desires, "genetic drives", etc. that they feel and dictate their actions would be useful.
Robert