They will just prevent you from doing things without it. Like let’s say tomorrow they say you need to show Real ID to vote, if you refuse to get a real ID and only have a normal drivers license it’s not like you would be able to say “ I don’t have a real ID so you have to let me vote anyway” they will just ban you from voting until you get one or an equivalent document I.e. passport
Do you not think this current admin would gladly take action under short notice to prevent 40% of the population from voting?