I’m curious if this means that certain cities or states will become citizenship havens because their local courts decided to provide injunctions for their jurisdiction.

The problem is and has always been “and subject to the jurisdiction thereof”

People have been twisting that to mean that anyone that isn’t born to American citizen parents means that you are not subject to the jurisdiction of the United States.

You need minimum B1 language in most European countries for both immigration and businesses to consider you for long term employment and or settlement, so that’s a start.