The law of the United States comprises many levels of codified and uncodified forms of law, of which the most important is the United States Constitution, the foundation of the federal government of the United States. The Constitution sets out the boundaries of federal law, which consists of acts of Congress, treaties ratified by the Senate, regulations promulgated by the executive branch, and case law originating from the federal judiciary. The United States Code is the official compilation and codification of general and permanent federal statutory law. 

Federal law and treaties, so long as they are in accordance with the Constitution, preempt conflicting state and territorial laws in the 50 U.S. states and in the territories. However, the scope of federal preemption is limited because the scope of federal power is not universal. In the dual-sovereign system of American federalism (actually tripartite because of the presence of Indian reservations), states are the plenary sovereigns, each with their own constitution, while the federal sovereign possesses only the limited supreme authority enumerated in the Constitution. Indeed, states may grant their citizens broader rights than the federal Constitution as long as they do not infringe on any federal constitutional rights. Thus, most U.S. law (especially the actual "living law" of contract, tort, property, criminal, and family law experienced by the majority of citizens on a day-to-day basis) consists primarily of state law, which can and does vary greatly from one state to the next. QUESTIONS:

Q1:
1. What is the purpose of the US Code?
2. What is the US Code comprised of?
3. 
Q2:
1. Does the law of the United States only have one level of law?
2. Is there only one level of law within the law of the United States?
3. 
Q3:
1. What type of reservations are included in the dual-sovereign system of American federalism?
2. The dual-sovereign system of American federalism includes what kind of reservations?
3. 
Q4:
1. What is the name of the organization that ratifies federal law treaties?
2. Federal law treaties are ratified by which organization?
3. 
Q5:
1. What type of treaties are ratified by the senate?
2. Which treaties does the senate ratify?
3. 
Q6:
1. What does the senate ratify?
2. Which federal low documents are ratified by the senate?
3. 
Q7:
1. What document should federal law treaties agree with?
2. Federal law treaties' boundaries are defined by which document?
3. 
Q8:
1. What federal sovereign's power is limited by the Constitution?
2. What does the Constitution limit within a federal sovereign?
3. 
Q9:
1. Who wins when a disagreement takes place between the federal and state authorities?
2. Whose opinion takes precedence should there be a disagreement between federal and state authorities?
3. 
Q10:
1. Is the federal authorities' power limited?
2. Is there a limit the amount of power that the federal authorities possess?
3. 
