American Eugenics Movement and Euro Nazism

What about government sponsored IVF treatments?
Designer babies? Deaf designer babies?
Selective abortion? (Aborting fetuses with Down’s, for example?)
Restricting marriage between two cognitively disabled people?
Surgically castratingsex offenders?
Human cloning?
Stem cell research?

And, less seriously: Animal breeding?
Science can be a bitch.