Those who are willing to make an "exception" to the principle that parents should make health-care decisions for their children should ask themselves when, in history, has a "limited" infringement on individual liberty stayed limited. By ceding the principle that individuals have the right to make their own health-care decisions, supporters of mandatory vaccines are opening the door for future infringements on health freedom.

Read MoreVaccines should be voluntary: Rand Paul

If government can mandate that children receive vaccines, then why shouldn't the government mandate that adults receive certain types of vaccines? And if it is the law that individuals must be vaccinated, then why shouldn't police officers be empowered to physically force resisters to receive a vaccine? If the fear of infections from the unvaccinated justifies mandatory vaccine laws, then why shouldn't police offices fine or arrest people who don't wash their hands or cover their noses or mouths when they cough or sneeze in public? Why not force people to eat right and take vitamins in order to lower their risk of contracting an infectious disease? These proposals may seem outlandish, but they are no different in principle from the proposal that government force children to be vaccinated.



By giving vaccine companies a captive market, mandates encourage these companies to use their political influence to expand the amount of vaccine mandates. An example of how vaccine mandates may have led politics to override sound science is from my home state of Texas. In 2007, the then-Texas governor signed an executive order forcing 11- and 12-year-old girls to receive the human papilloma virus (HPV) vaccine, even though most young girls are not at risk of HPV. The Texas legislature passed legislation undoing the order following a massive public outcry, fueled by revelations that the governor's former chief of staff was a top lobbyist for the company that manufactured the HPV vaccine.

