Article I
concepts
The Constitution, even with all twenty-seven amendments, is one of the world's shortest written constitutions, containing only some 8,700 hundred words overall. The framers of the Constitution realized that many of its principles would have to be fleshed out by the three branches of government, especially by the legislature in fulfilling its responsibility for making the nation's laws. [Source: U.S. Constitution A to Z; Necessary and Proper Clause]
necessary and proper clause