5
The Constitution establishes a federal government of expressly defined and enumerated powers.
All laws enacted by Congress must be based on one or more of these powers because the federal
government can exercise only the powers that have been delegated to it.
A. Expressly enumerated powers Article I, Section 8 mentions and expressly delegates the
following powers to the federal government:
The power to levy taxes and make expenditures for the national defense and general welfare.
United States v. Lopez (Part II) The issue was whether a federal statute making it a crime to
possess a gun in a school zone could be sustained as a valid commerce clause regulation
under the third category. The Court
reaches only commercial activity. The first two categories are not so limited. The Gun-Free
School Zones Act, for example, would have been constitutional if it had required proof that
the gun possessed in a school zone had traveled in interstate commerce in the past, see, e.g.,
United States v. Pritchett, 327 F.3d 1183 (11th Cir. 2003), because this statute would have
been sustainable under the second category.
The power to establish national rules regarding immigration, naturalization, and bankruptcy.
The power to coin money, regulate currency, and punish counterfeiting.
The power to establish post offices and post roads.
declaring war, raising an army) or that no single state could effectively deal with on its own.
B. Implied powers. The powers granted to Congress are not confined to those that are expressly
necessary and proper for carrying into e This is the source of
-called implied powers.
United States v. Comstock (Part II). The question presented was whether the Necessary and
Proper Clause empowered Congress to provide for civil commitment of sexually dangerous
federal prisoners after their prison terms were served. The argued that
laws enacted under the Necessary and Proper Clause must be directly related to