Question

Tariffs protect American jobs and wages. Is this valid or invalid? Justify your answer.
Ms. Sue
We'll be glad to critique your thinking.
susie
Yes I think this is valid. The thing is I don't know how to explain it; could you help with that.

Writeacher
http://en.wikipedia.org/wiki/Tariff

and

http://economics.about.com/cs/taxpolicy/a/tariffs.htm