“I’d rather see immigrants get this treatment.”
Me too! Perhaps extending the “program” to the Middle East!
Funny that this came up—there are chemical and biological means available to alter the fertility of deer and other species; and, they work equally well upon male and female. Also, male aggression is substantially reduced, and the female reproductive drive neutralized.
One effect determined through on-the-job accidents by personnel administering the doses, is the materials work on humans in an equally potent manner. This has the consequence that infertility can be induced for one or more years by inadvertent exposure. This aspect is not widely advertised. The materials also are of restricted availability, thus difficult to source.
Control of an invasive population is possible.
http://www.marylandqdma.com/files/Download/GONACON.pdf
http://www.sciencedirect.com/science/article/pii/S0093691X11003074
https://en.wikipedia.org/wiki/Porcine_zona_pellucida