U. S. Constitution, Article II, Section 3, Clause 5
enforce, administer, carry out provisions of federal law
A president may not have any power to enforce the law at all; in most places the position is solely one of civilian leadership.
No State shall make or enforce any law which shall abridge the privileges or immunities of citizens of the United States
The ability to enforce laws that contradict any federal law, treaty, or the constitution. If state law says 'A' and Congress passes a law that says 'B', or the US enters a treaty that says B, then the federal law overrides the state law.
The due process clause requires that, except by the due process of law, a free person should not be denied of their freedom, life or property. In the US, the addition of this clause to the constitution was proposed by the state of New York.
Only to the extent that the president empowers him. It is the president's job to enforce the law.
The president does have the authority to veto an existing law, but this can still be overturned.
DoD forces are prohibited from performing law enforcement functions by federal law. Use of the DoD to enforce internal law and order requires declaration of martial law by the president.
The Constitution requires that the President faithfully execute the laws of the United States. That said, there aren't enough police in the world to completely enforce every law all the time, and some laws - like many immigration laws - are often given low priority. But the prioritization of law enforcement is wide-open to abuse, and often IS abused.
Typically both States and the Department of Justice will enforce federal law. States will enforce state law unless preempted or lack of law and allow federal law to be enforced through the Supremacy Clause of the Constitution.
No Article 6 Section 1 Clause 2
enforce, administer, carry out provisions of federal law
The president has federal agencies and the armed forces to enforce policies and laws. However Congress has the purse strings to fund this.
Force bill
he gets to enforce the law
THe President can veto a bill before it becomes a law. Once a bill becomes law, the President can not changeit. However, at the risk of being impeached, he can refuse to enforce it, or enforce it selectively, enforcing only the parts he likes, the way that Obama treats the immigration laws.
The president has the power to enforce any law upon all citizens