> why was it never codified in law
Because a large part of the country is against late-stage abortions, and there is a need to keep a semblance of democracy?
Because a large part of the country is against late-stage abortions, and there is a need to keep a semblance of democracy?
Congress still has the ability to pass those laws, should they want to.
The variety of ways that US States internally allow municipalities to have their own rules is actually quite interesting: https://en.wikipedia.org/wiki/Home_rule_in_the_United_States