The president is the head of the Executive Branch. It is the duty of the Executive Branch to enforce the laws of the United States. (One would hope that this would be enough to answer your question).
To take it a step further, it is among the duties of the Legislative Branch (Congress) to make the laws the the President / Executive Branch are to uphold.
More specifically:
Article I, Section 8: "The Congress shall have Power...To regulate Commerce with foreign Nations...To establish an uniform Rule of Naturalization...And To make all Laws which shall be necessary and proper for carrying into Execution the foregoing Powers, and all other Powers vested by this Constitution in the Government of the United States, or in any Department or Officer thereof."
So you can see, that because congress has made laws concerning our borders and Immigration, as mandated by the Constitution, it becomes the President's job to enforce these laws.
If he / she decides to abdicate his duties and forsake his / her oath of office, he / she is unfit to hold office and should either resign or be impeached. This final statement applies to all matters, not just immigration reform.
Yes, it does. The US Constitution requires the President of the United States to be a "natural born Citizen", so the Austrian-born Schwarzenegger does not qualify.
The U.S. Constitution requires that the Senate have two officers. Theses are the President of the Senate, which is the Vice President of the United States, and the President pro tempore, which is traditionally the senior member of the majority party in the Senate.
U. S. Constitution, Article II, Section 3, Clause 5
State of the Union Article II, Section 3, Clause 1
The Vice-President does not preside at an impeachment of a President. The Constitution requires that the Chief Justice of the Supreme Court preside over an impeachment trial.
The constitution of the US requires that a President must be born in the US.
The Constitution requires it.
Because the constitution requires it
Because the constitution requires it
Becoming a President requires swearing to uphold the Constitution, but does not make them sign it. The Constitution's signatories were those who signed in Philadelphia in 1789 and no others.
Yes, it does. The US Constitution requires the President of the United States to be a "natural born Citizen", so the Austrian-born Schwarzenegger does not qualify.
The U.S. Constitution requires that the Senate have two officers. Theses are the President of the Senate, which is the Vice President of the United States, and the President pro tempore, which is traditionally the senior member of the majority party in the Senate.
None. The US Constitution requires the President to be a natural born citizen.
Yes, of course. There is nothing in the US constitution that requires the president to be of any particular religion - or to have any religion at all.
The US Constitution requires a presidential candidate be 35 years of age or older.
U. S. Constitution, Article II, Section 3, Clause 5
State of the Union Article II, Section 3, Clause 1