The U.S. Constitution does not use the term federalism, nor
                does it provide extensive details about the federal system. Nevertheless, the
                framers helped created a federalist system in the United States, particularly in the
                ways the Constitution allocates power.
The National Government 
Article VI of the Constitution declares that the Constitution and any laws
                    passed under it form the “supreme Law of the Land” in a passage called the
                        supremacy clause. This clause implies that the national
                    government has authority over the state governments.
The Constitution grants the national government several different kinds of
                    powers and prohibits it from taking certain actions. The Constitution outlines
                    four major types of power: enumerated, implied, inherent, and
                    prohibited.
 
THE NATIONAL GOVERNMENT’S POWERS
| 
Type
 | 
Key Clause
 | 
Explanation
 | 
Examples
 | 
| Enumerated (expressed) | Article I, Section 8 | Powers explicitly granted to Congress | Declare war, coin money, levy taxes, regulate interstate
                                commerce | 
| Implied | Necessary and proper (Article I, Section
                                8) | Powers that Congress has assumed in order to better do
                                its job | Regulate telecommunications, build interstate
                                highways | 
| Inherent | Preamble | Powers inherent to a sovereign nation | Defend itself from foreign and domestic
                                enemies | 
| Prohibited | Article I, Section 9 | Powers prohibited to the national
                                government | Suspend the writ of habeas corpus, tax
                                exports |