Republicans hail Delta’s vaccination policy — even as it goes further than Biden’s

It also suggests that, whatever one thinks of the propriety of such mandates, they seem to be moving the Overton window, a term for expanding the political discussion. Suddenly, Biden’s policy for large businesses (the actual one, which isn’t truly a vaccine mandate despite what its critics have said) and even some policies that go further (like Delta’s surcharge and Fox’s daily-testing alternative) are being held up as more acceptable middle-grounds.