Follow the money.
Wages are a "cost." How to decrease them with jobs that can't be outsourced overseas?
Insource workers.
Drivers' license scam for illegals is a project to replace American citizens and residents from transportation jobs, and at least to depress their wage bargaining power. Driving a plumber's truck, rigs, forklifts, pizza delivery, you name it, it's on the table. Read a list of the corporate contributors to the National Immigration Forum and you'll fathom the agenda.
There's other motives, like insurance companies wanting to make more money, but that's peripheral. The money behind this is the transportation industry. They deploy "ethnic" front groups to whip up liberal guilt about "people of color" and stories about illegals not being able to drive their children to school.
That's the chaff. Indeed, since people of color who are residents and citizens of this country are disproportionately affected, licenses for illegals is objectively a racist policy.
The business interests with short-term profit taking views have united with the lefties and guilt-liberals to strip the American middle class of its "lifestyle", holding hands and singing Kumbaya while they're doing it.
Follow the money.