For example, a state could raise its corporate income tax rates, but as a separately severable provision, give a tax credit reversing X% of the tax hike if X% of their employees have no restrictions on their ability to publicly litigate and disclose harassment and discrimination claims. (Many variations on the specifics are possible.)
If companies drop these restrictions, it's no extra tax for them and just a few extra lines to complete on a tax form.
Alternatively, if companies keep these restrictions, there's no conflict with the FAA, just a financial penalty.
And if they get the tax credit provision struck down somehow, they keep the tax hike regardless of their employment legalese, so they may not want to fight that battle.
What major flaw am I missing? Just the optics/PR around this politically speaking, or something worse?