I said "demand can only be controlled through restriction on immigration...". For example, if the Bay Area wants to control demand to keep house prices lower, it has no ability to that because it does not have a border. It cannot stop people moving there. Only the federal government can do that at a national level by controlling how many people can cross the border to immigrate. And as a second matter influence birth rates through public health programs (but birth rates aren't a problem in the USA).

> The US currently had supply and demand issues amongst it's growing and declining cities.

Yes, but cities and states cannot control demand. They can only control supply.