Definition from Nolo’s Plain-English Law Dictionary
The fundamental right of a government to make all necessary laws. In the United States, state police power comes from the Tenth Amendment to the Constitution, which gives states the rights and powers “not delegated to the United States.” States are thus granted the power to establish and enforce laws protecting the welfare, safety, and health of the public.
Also please read this : supreme.justia.com/cases/federal/us/197/11/#tab-opinion-1921099
A quick summary is this :
In response to an outbreak of smallpox more than a century ago, the Massachusetts Legislature passed a mandatory vaccination law for adults, imposing hefty fines and potential imprisonment for those who refused.
Proclaiming the law to be an invasion of his liberty, Henning Jacobson, a pastor and community leader, refused to be vaccinated, was prosecuted and fined, and subsequently filed a lawsuit challenging the constitutionality of this edict.
Writing for the 7-2 majority in Jacobson v. Massachusetts (1905), Justice John Marshall Harlan rejected Jacobson’s argument, upholding the state’s right to vaccinate Jacobson against his will.
Citing precedent in which the court had upheld the authority of states “to enact quarantine laws and health laws of every description,” Harlan wrote that “the liberty secured by the Constitution of the United States to every person within its jurisdiction does not import an absolute right in each person to be, at all times and in all circumstances, wholly freed from restraint.”
So just remember we can do this the easy way like we have been and people need to take it serious or it could be the hard way later.
Edit for those that seem to need it:
As a note, the Ninth Amendment and the Tenth Amendment have not been incorporated, and it is unlikely that they ever will be. The text of the Tenth Amendment directly interacts with state law, and the Supreme Court rarely relies upon the Ninth Amendment when deciding cases.