Writing Feedback / developing a strong outline for essay: Banning Smoking in Public Places [2]

I am writing a term paper for a first year college class. I had to pick any controversial socio-economic topic and I chose "Banning Smoking in Public Places". Minimum 5 pages. Requires research.

I need help developing a strong outline.

so far I Have...

I. Introduction
A. Rhetorical Question/Illustration
B. Introduce topic/ Discuss both viewpoints
C. Thesis Statement

II. Body
A. Discuss negative effects of smoking & secondhand smoke effects
B. Why smoking in public places should be done away with
C. Examples of places that have banned smoking and their findings
D. What could be expected if smoking in public places were to be banned in Minnesota or even the United States

III. Conclusion
Not sure?

A little bit of what I'm looking for...

- should I narrow it down to Minnesota or broaden the topic to the entire united states
- Is the topic of banning smoking in public places narrowed down enough? I want to pretty thouroughly cover the topic and not just graze over it.

- suggestions on points to emphasize
- personal opinions on the matter...if you think they would be of help