Sorry, but that won't fly.
The elderly already have an ID. They needed it to get social security.
If a black drives, has a job, or applied for a job, or is on welfare, or has a bank account, or pays social security or gets it, they have an ID. You can't have any of those without first having an ID. Same with Mexicans.
IDs are easy to get. Anyone can get a birth certificate. If not that, then something else.