analyse the final presidential debate (Obama vs Romney) using “Communication Law”

As Title, please watch the final presidential debate on Oct 22nd from Obama n Romney .
http://www.youtube.com/watch?v=oAJiovQZcZ8

analyzing the debate using the materials from the textbook..HAS TO BE RELATING TO LAW!!
o
ur textbook is Communication Law in America by Paul Siegel third edition

the whole paper has to analyse through those aspect below:
1) American Legal System
2) Freedom of Speech
3) Defamation: Common Law element
4) Defamation: First Amendment Limitation
5) Invasions of Privacy
6) Copyright and Trademark

around 2.5 pages.