[WhompingWindows]

You're still not correct...you're saying eating plant based diet has essentially zero footprint, which is untrue, especially with food waste. And you're saying driving/transportation choice alone is sufficient, when we know that even if they bought an EV or used a train, those transportation regimes still incur carbon emissions in their production and operation, though admittedly less LOCAL emissions (great!) and potential for lower future emissions as the grid cleans up (great!).

These individuals still can not choose zero-carbon heating/cooling (which is probably 1/3 of American's footprint, which you neglected to even mention), they can't choose how their infrastructure is produced (steel and cement, big time emissions there), they can't choose the actions of their American government, which spends a lot of carbon emissions on its internal activities as well as its foreign incursions.

So no, you really can't "boil down" to zero net emissions as an American unless you stop using heating, cooling, roads, transportation of any kind except walking/bikes, and if you completely stop supporting the US govt and its activities.