What was the significance of the court case Schneider v Rusk in 1964?

The significance of this case is that it established the idea that the 5th Amendment protects naturalized citizens from being discriminated against because they are not native-born citizens.

At this time, there was a law that said that a naturalized citizen who went back to his or her native country and stayed there for more than three years would lose his or her American citizenship.  There was no provision in law that said that a native-born citizen could lose his or her citizenship for living abroad for any length of time.

Angelika Schneider was a naturalized American citizen who lost her citizenship because of the provisions of this law.  The Court held that it was illegal for the government to do this to Schneider.  It held that this law was discriminatory because it treated different types of citizens differently.  This, the Court, held, was illegal under the Due Process Clause of the 5th Amendment.

Thus, this case is significant because it protects the rights of naturalized citizens.  It establishes the idea that naturalized citizens cannot be treated differently than people who were born in the US and have been citizens since they were born.

What was the significance of the court case "Schneider v Rusk"?

The court case of Schneider v. Rusk is a case heard in the Supreme Court which dealt with the removal of citizenship from Angelika Schneider who came to America with her parents from Germany as a child. When she reached the age of sixteen, she was afforded citizenship because her parents had become naturalized citizens. After she graduated from college, Angelika returned to Germany and remained there for three years. But, when she returned to the United States, she was informed that she no longer had her citizenship. The State Department invoked the Immigration and Nationality Act, an act that removed the citizenship of any naturalized citizen in the U.S. who went back to his or her country of birth and stayed there for at least three years. 

Schneider took her case to the Supreme Court, which ruled in her favor: 

Naturalized U.S. citizens have the right to return to and reside in their native countries, and retain their U.S. citizenship, even if they never return to the United States.

This was a very significant decision for all naturalized citizens in the U.S. as their American citizenship is protected if they return to their homeland.