(Same argument applies today to the EU or US Federal government as well, for citizens who might be practically confined by the policy of those governments and unable to move outside their purview.)
that is the beauty of local control, if School Board in another state does something you do not like, good news it does not effect you. If the Dept of Labor does something nationally you do not like well there is nothing you can do about it as your power is diluted due to national level, and you can not move...