Here's what Mr. Holdren and his co-authors said in their 1977 book Ecoscience:
Individual rights. Individual rights must be balanced against the power of the government to control human reproduction. Some people—respected legislators, judges, and lawyers included—have viewed the right to have children as a fundamental and inalienable right. Yet neither the Declaration of Independence nor the Constitution mentions a right to reproduce. Nor does the UN Charter describe such a right, although a resolution of the United Nations affirms the "right responsibly to choose" the number and spacing of children (our emphasis). In the United States, individuals have a constitutional right to privacy and it has been held that the right to privacy includes the right to choose whether or not to have children, at least to the extent that a woman has a right to choose not to have children. But the right is not unlimited. Where the society has a "compelling, subordinating interest" in regulating population size, the right of the individual may be curtailed. If society's survival depended on having more children, women could he required to bear children, just as men can constitutionally be required to serve in the armed forces. Similarly, given a crisis caused by overpopulation, reasonably necessary laws to control excessive reproduction could be enacted.Here is another passage, headed "Involuntary fertility control."
It is often argued that the right to have children is so personal that the government should not regulate it. In an ideal society, no doubt the state should leave family size and composition solely to the desires of the parents. In today's world, however, the number of children in a family is a matter of profound public concern. The law regulates other highly personal matters. For example, no one may lawfully have more than one spouse at a time. Why should the law not be able to prevent a person from having more than two children?
The third approach to population limitation is that of involuntary fertility control. Several coercive proposals deserve discussion, mainly because some countries may ultimately have to resort to them unless current trends in birthrates are rapidly reversed by other means. Some involuntary measures could be less repressive or discriminatory, in fact, than some of the socioeconomic measure suggested.These are the kind of people this administration turns to for science. It's chilling to say the least.
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A program of sterilizing women after their second or third child, despite the relatively greater difficulty of the operation than vasectomy, might be easier to implement than trying to sterilize men. This of course would be feasible only in countries where the majority of births are medically assisted. Unfortunately, such a program therefore is not practical for most less developed countries (although in China, mothers of three children are commonly "expected" to undergo sterilization).
The development of a long-term sterilizing capsule that could be implanted under the skin and removed when pregnancy is desired opens additional possibilities for coercive fertility control. The capsule could be implanted at puberty and might be removable, with official permission, for a limited number of births. No capsule that would last that long (30 years or more) has yet been developed, but it is technically within the realm of possibility.
Source here.