Jasser is showing American Muslims how their worship can coexist with American laws and values, while CAIR is pushing for a multicultural society where the two will always be in conflict.
Here is the most important point; Jasser views Islam as a religion, and CAIR considers it an all inclusive culture and ideology with a religious component. This distinction cannot be understated if we ever expect America to find peace within its borders.
I explain the difficult debate our country will be forced to to have in this article: http://mywtfblog.com/2012/04/is-it-a-religion/
The conversation is very basic; you may worship any god you wish as is protected by the 1st Amendment, but to live in America you must separate yourself from the ideology