The problem is that if the ID is not free, it could constitute a Poll Tax:
https://history.house.gov/HistoricalHighlight/Detail/37045
Which is against the constitution. It also disenfranchises voters who do not have a permanent address.
https://history.house.gov/HistoricalHighlight/Detail/37045
Which is against the constitution. It also disenfranchises voters who do not have a permanent address.