This paper will describe the role of United States Constitution and the United States legal system in business regulation matters in the United States. “The Constitution of the United States is the supreme law of the United States of America. It provides the foundation for the U.S. government, and guarantees the freedom and rights of all U.S. citizens. No laws may contradict any of the Constitution's principles and no governmental authority in the U.S. is exempt from complying with it.”(Open-encyclopedia, n.d., p. 2) “The United States Constitution and legal system affect the governance and functions of businesses. In the United States, individuals are subject to fines and jail time for violating laws. When businesses take an active role in roles in enabling employees to violate laws they are subject to fines and being shutdown. For example, businesses have responsibility to assure that all employees have legal work status. Some undocumented employees have been able to acquire employment. The government is trying to properly to enforce residency and citizenship laws by raiding business.” (The Role of the United States Constitution in Business. AC Associated Content/ Legal) The United States Constitution and the United States legal system in business regulation is to set the utmost level of rules for forming an government but, at the same time to protect the rights of the people of the United States. The Constitution structures the boundaries between federal and state laws. It also separates federal power among legislative, executive, and judicial branches of government to avoid the branches from overwhelming each other’s; each branch contributes to the legal system. The role of a constitution is to provide us with a good government, while at the same time placing limitations on the powers of the governors.