From James Buckley's Restoring Federalism:
...in The Federalist, James Madison explained:
The powers delegated by the proposed Constitution to the federal government, are few and defined.... [T]he powers reserved to the several States will extend to all the objects which, in the ordinary course of affairs, concern the lives, liberties, and properties of the people, and the internal order, improvement, and prosperity of the State.
This division of labor accords with the venerable principle of subsidiarity, which allocates governmental responsibilities to the lowest levels able to exercise them. The effect is to ensure that governmental decisions most immediately affecting people's lives will be made by officials who are the closest to them and have the most intimate knowledge of the relevant facts and conditions. This design served us so well during the first 150 years of our national existence that the eminent British historian Lord Acton, declared that our constitutional development of federalism "has produced a community more powerful, more prosperous, more intelligent, and more free than any other which the world has seen." Over the years, however, our federal government has engaged in massive raids on the constitutional prerogatives of the states. Today there is virtually no governmental responsibility beyond the reach of federal authority. As a consequence, our nation has been converted into an administrative state overseen by unelected officials who issue regulations that reach into every corner of American life. Few appreciate the extent of this transformation. In 1935, at the outset of the New Deal, the United States Code consisted of a single volume containing 2,275 pages of statutes. Today, it comprises 30 volumes of statutory law. When I was in law school, Title 42, which contains the federal laws relating to public health and welfare, consisted of just 128 pages. Today it contains over 6,200 pages, more than twice as many as the entire body of federal law at the beginning of the New Deal.
Bureaus and agencies issue endless marching orders to administer those federal statutes. By 2010, the Code of Federal Regulations contained over 166,000 pages of detailed, fine-print regulations that have the force of law and affect virtually every aspect of American life.
People have to spend tons of money on lawyers just to know what is in those pages. What a waste. Good for the legal industry, however.