I don't need a passport to travel by air in the United States.

Also, the people we are discussing for whom the cost of ID and any associated costs are too much probably aren't doing a lot of domestic air travel, either.

The problem with your argument is that I have no objection to voter photo ID laws. I'm not being a very good liberal for saying so, and I know it, but I think they are reasonably easy to obtain with minimal cost. I think it should be no cost (or perhaps no cost with some demonstrable financial hardship, but that opens cans of worms I don't want to play with).

I even said that, up there somewhere. The idea that a passport is a reasonable alternative is absurd, though.