Some libertarians have attacked the U.S. Constitution as being a “blueprint” of powerful government. They confuse the government as it exists today with what it was originally designed and understood to be at the time it was ratified. Originally, the Constitution endorsed a very minimalist federal government. For a national government that provides at least a court system and national defense, the Constitution is almost the ideal founding document.
While it is true that the federal government was weaker under the Articles of Confederation, it was weaker in ways that made it a worse government. The government under the Articles of Confederation did not have the power to tax directly, instead it relied on the states to provide funds for the national government. But this means that those states that refused to pay taxes got the benefits of the courts and national defense without having to pay the their portion of the costs. States were encouraged to free ride on each other which would prevent a national defense capable of preventing further attacks by other foreign powers.