California is today a left wing state due to legal and illegal immigration. During the Regan years and prior it was a Republican State. All this crap is about changing the demographic voting population. The democrats want to flood us with aliens that will vote democrat which today is Socialist quasi communist
It is really that simple.
In my view the Democrats are refusing to move on the Wall for two reasons:
1. They know it will be effective and they don’t want Trump to get credit for it.
2. After the midterm elections where, with the aid of illegals voting, the Democrats won big in California. They would like to make it a model for every state.