While doing some research into state retail pricing laws a few years ago, I discovered how tough Massachusetts is, being one of the last holdouts mandating ticketing on all items, and only relenting in exchange for price scanners every so many aisles. Living in Pennsylvania and annoyed by stores tying their best prices to their apps, I fancifully emailed Elizabeth Warren, asking if she'd prod a friend in state government to consider a legislative end run around apps. I had no idea such a law really existed. "First in the nation" I expect. Wonder how long it's been around?