December 21, 2021

Defenders of government-imposed COVID vaccine mandates frequently cite the 1905 Supreme Court case of Jacobson v. Massachusetts to argue that such mandates are valid.  The arguments are typically presented as though the Court decided that question without qualification or exception.  A careful reading of the case demonstrates that it is a limited and tenuous precedent for current COVID policy. 

Jacobson involved a Massachusetts statute that gave the board of health of a city or town the authority to “require and enforce the vaccination and revaccination of all the inhabitants thereof,” and imposed a five-dollar fine on adults who refused to comply.  The Supreme Judicial Court of Massachusetts, and then the United States Supreme Court, upheld the statute, but their grounds for doing so lend little support either to COVID vaccine mandates in general, or to federal COVID vaccine mandates in particular.  

Justice John Marshal Harlan, in writing the majority opinion for the U.S. Supreme Court, recognized that “[t]he authority of the State to enact this statute is to be referred to what is commonly called the police power…”  An immediate issue arises, at least in the matter of federal mandates, in that there is no general federal police power.  The Supreme Court has explicitly declared that “The Constitution… withhold[s] from Congress a plenary police power.” This is a well-established constitutional principle, as noted by Justice Clarence Thomas in United States v. Lopez (1995).  Thus, the stated authority for the vaccine mandates approved in Jacobson is explicitly lacking in the case of a federal vaccine mandate.  To the extent that the federal government has any authority to impose vaccine mandates in the case of COVID, that authority is not found in the Jacobson opinion, and that case is largely irrelevant to the issue, except perhaps as an illustrative analogy.  Jacobson does not establish a federal authority to impose COVID vaccine mandates.   The Court specifically stated “The safety and health of the people of Massachusetts are, in the first instance, for that Commonwealth to guard and protect.  They are matters that do not ordinarily concern the National Government.” 

Beyond the issue of constitutional authority, the Jacobson case relies on circumstances that are inapplicable to the COVID pandemic.  Following Jacobson’s conviction in the trial court, he complained that he was not allowed to present evidence that the risk of vaccination outweighed the benefits.  The Massachusetts Supreme Judicial Court dismissed this argument by observing:

[…]for nearly a century, most of the members of the medical profession have regarded vaccination, repeated at intervals, as a preventive of smallpox […]and that not only the medical profession and the people generally have for a long time entertained these opinions[…] 

The Massachusetts court, quoted approvingly by the U.S. Supreme Court, took it as indisputable that vaccination prevented the spread of smallpox, so much so that contrary evidence need not be considered.   

Like the Massachusetts Court, the U.S. Supreme Court presumed the efficacy and safety of smallpox vaccination, describing them as “the knowledge which, it is safe to affirm, is common to all civilized peoples touching smallpox and the methods most usually employed to eradicate that disease[…]” After some discussion, the Supreme Court noted “[…]vaccination, as a means of protecting a community against smallpox, finds strong support in the experience of this and other countries[…].”  This is far from the case with COVID vaccines.  The efficacy of the available COVID vaccines in preventing the spread of infection does not “find strong support in the experience of this and other countries,” nor is it the case that “the people generally” entertain this opinion.