OK, I get you now.  We were probably just talking past each other a little, but God believe me I don't need anymore Constitutional education or training.  

I agree the council people can act politically, but they're not demanded by anything to do so.  There's no part of the City Charter that says anything about any of this, that's why they shouldn't engage in this as a Council.  Let's look at some Chapter titles of the Charter to see what Council is elected to address:  Advertising, Animals, Air Pollution Control, Buildings, Community Planning and Development, Auctions, Emergency Vehicles, Health and Sanitation, Housing, Zoning, Licenses, etc.  There is a Human Rights Chapter, but that deals with employment issues, creates separate committees, deals with contracting issues, etc.  These are the pedestrian day-to-day running a City issues Council is supposed to deal with They are free to act politically privately, but don't argue they should be acting on immigration issues.