The writers of the Constitution believed that security of the nation is of such importance that the the federal government has essentially unlimited power to effect that security:

"The authorities essential to the common defense are these: to raise armies; to build and equip fleets; to prescribe rules for the government of both; to direct their operations; to provide for their support. These powers ought to exist without limitation, because it is impossible to foresee or define the extent and variety of national exigencies, or the correspondent extent and variety of the means which may be necessary to satisfy them. The circumstances that endanger the safety of nations are infinite, and for this reason no constitutional shackles can wisely be imposed on the power to which the care of it is committed. This power ought to be coextensive with all the possible combinations of such circumstances; and ought to be under the direction of the same councils which are appointed to preside over the common defense.

Whether there ought to be a federal government intrusted with the care of the common defense, is a question in the first instance, open for discussion; but the moment it is decided in the affirmative, it will follow, that that government ought to be clothed with all the powers requisite to complete execution of its trust. And unless it can be shown that the circumstances which may affect the public safety are reducible within certain determinate limits; unless the contrary of this position can be fairly and rationally disputed, it must be admitted, as a necessary consequence, that there can be no limitation of that authority which is to provide for the defense and protection of the community, in any matter essential to its efficacy that is, in any matter essential to the formation, direction, or support of the NATIONAL FORCES."

- Hamilton, Federalist #23