I’d like to propose the creation of a new National ID card, just known as the citizenship card.
Every citizen of the country will have this in addition and separate from their state id/ DL.
This card would prove your legal right to live in this country, but it would also be so much more. From citizenship status, to subsidized services, this new card would grant perks for just being a citizen.
Beyond this, more than a state issued ID/DL, but less personal than an SSN, and easier to carry than a passport.
This would also of course be tied to your ID for voting in elections.
This card would grant subsidized or free access to select services
Such as public transportation, reduced Gym costs, free access to national parks discount from USA based businesses, discounts on healthy foods etc. tc. etc.