What is your opinion?
http://americanhistory.about.com/od/usconstitution/f/elastic.htm
Why is the necessary and proper clause important?
7 answers
It descibes exactly what congress may or may not do.
It authorizes Congress to make the necessary laws to effectively run the country.
Would that be under the commerce power?
No.
Is it the basis for the existence of the implied powers?
Yes.