"10th Amendment: The powers not delegated to the United States by the Constitution, nor prohibited by it to the States, are reserved to the States respectively, or to the people."
"Many are the exercises of power reserved to the States [emphasis added] wherein a uniformity of proceeding would be advantageous to all. Such are quarantines, health laws, regulations of the press, banking institutions, training militia, etc., etc." —Thomas Jefferson to James Sullivan, 1807.
"Congress is not empowered to tax for those purposes which are within the exclusive province of the States." —Justice John Marshall, Gibbons v. Ogden, 1824.
"They form a portion of that immense mass of legislation, which embrace every thing in the territory of a state not surrendered to the general government [emphasis added]. Inspection laws, quarantine laws, and health laws, as well as laws for regulating the internal commerce of a state, and others, which respect roads, fences, &c. are component parts of state legislation, resulting from the residuary powers of state sovereignty. No direct power over these is given to congress, and consequently they remain subject to state legislation, though they may be controlled by congress, when they interfere with their acknowledged powers." —Justice Joseph Story, Article I, Section 10, Clause 2, 1833.
From the congressional record, clarification by Rep. John Bingham, the main author of Section 1 of the 14th Amendment, that the delegates to the Constitutional Convention had left the care of the people with the states, not the federal government.
”Simply this, that the care of the property, the liberty, and the life of the citizen, under the solemn sanction of an oath imposed by your Constitution, is in the States and not in the federal government [emphases added]. I have sought to effect no change in that respect in the Constitution of the country.” —John Bingham, Congressional. Globe. 1866, page 1292 (see top half of third column)
"From the accepted doctrine that the United States is a government of delegated powers, it follows that those not expressly granted, or reasonably to be implied from such as are conferred, are reserved to the states, or to the people. To forestall any suggestion to the contrary, the Tenth Amendment was adopted. The same proposition, otherwise stated, is that powers not granted are prohibited [emphasis added]." —United States v. Butler, 1936.
We have term limits here in Nebraska.