mandate for states that require picture voter ID's in Federal elections the following:

All States that require a picture voter ID for Federal elections provide the ID free of charge. (A charge could be considered a defacto Poll Tax)
Voter ID sign up stations be open at least 3 days a week plus one weekend day and one evening. That all stations be no more than 100 miles apart or that mobile voter sign up stations be used in places where there is no permanent structure as a voting station.