The constitutional limitations on government have been withered away to a point that it is unfortunately laughable to call America a nation of laws. The great experiment in limited government has mutated into the largest, most ingeniously intrusive government leviathan in all of human history. Single agencies of the Federal Government such as the Health and Human Services Department now spend more than what just a handful of nations even generate every year. ($845.4 billion in 2010, which would be the 15 largest economy in the World in nominal GDP, just below the nation of Mexico.
Every aspect of human life, death, relation, and creation is regulated, taxed, surveyed, and controlled. You must get a license to do everything from get married to cut hair, and you can't even escape the taxman when you die.
Of course, this has been happening for a long, long time. The encroachment of the state, and the growth of leviathan began long before you were born.