19 states have “no more changing the clocks” laws passed, but aren’t allowed to do so without approval of the federal government?
It’s pretty obvious you can just do what you want these days, consequences are trivial to non-existent, so why don’t we just not change our clocks? (or change them and not change them back, whatever floats your boat)
The answer is that there is a law, The Uniform Time Act.
Ad to why we just don’t ignore it, I’m sure it’s because the support for it just isn’t strong enough to merit ignoring a federal law.