They can... and they just did, I just heard while I was out today the bill has been passed, and when we spring forward, we'll never fall back again.
I'm revolting. No seriously, I mean, I'm going to revolt. This infringes on my Constitutional rights and infringes on my "beliefs" (yeah, I'm using that one), there's no way I'm springing my clock ahead an hour forever.
And believe it or not, there's other states (or parts of states) that have done this before, so this isn't entirely new. Heck, most of the rest of the world is on permanent DST, or never observed DST, it's really only North America and parts of Europe that observe it.