The Second Amendment

1. The second amendment was written by James Madison

2. The second amendment protects citizens rights to bear arms

3. The second amendment was written in 1791

4.The second amendment protects all U.S citizens

5. The second amendment was written to protect citizens rights to own a gun. This means that the government can't take away firearms whenever they want. The law is also similar to the English Bill of rights gun laws. However the Government can set restrictions on certain types of guns if they are owned without any reasonable reason.

http://en.wikipedia.org/wiki/Second_Amendment_to_the_United_States_Constitution

The 4th Amendment

Under the Fourth Amendment, search and seizure (including arrest) should be limited in scope according to specific information supplied to the issuing court, usually by a law enforcement officer who has sworn by it. Fourth Amendment case law deals with three central questions: what government activities constitute "search" and "seizure"; what constitutes probable cause for these actions; and how violations of Fourth Amendment rights should be addressed. Early court decisions limited the amendment's scope to a law enforcement officer's physical intrusion onto private property, but with Katz v. United States (1967), the Supreme Court held that its protections, such as the warrant requirement, extend to the privacy of individuals as well as physical locations. Law enforcement officers need a warrant for most search and seizure activities, but the Court has defined a series of exceptions for consent searches, motor vehicle searches, evidence in plain view, exigent circumstances, border searches, and other situations. 

Bibliography.
http://en.wikipedia.org/wiki/Fourth_Amendment_to_the_United_States_Constitution