Which Supreme Court decision authorized Congress to pass laws under the Necessary and Proper Clause, provided they not conflict with Congress’ responsibilities as outlined in the Constitution?

McCulloch v. Maryland in 1819 I believe.

Explanation:

so they can differentiate themselves from others as they saw themselves as the superior race. the star was basically a symbol that meant you are a less of a person than i am because of my race. the star was also degrading for those who had to wear it because they were aware of this and the nazis used the notion to make them feel less like a person.