Wrong on multiple levels.
Depends on one's perspective. The city leaders and others who promote this device are working at a very obvious level - that of remaking America (from the bottom up).
Since that mentality tends to be reinstalled at local levels, the feds better get a grip on enforcing immigration laws and at the same time impose effective penalties on cities and states that choose to not assist.
There could come a time when completion of a border wall would be too late.