So what? The driver and a crew of illegals (better - foreign nationals) can say yup we are from Mexico, Guatemala, Syria, Afghanistan, etc. Then gibe the officer a Bronx cheer and say chi**-te fuzz you can’t do anything about it. Sheesh.
Nonsense. They can be detained while information is awaited on their legal or illegal status and they can be held for an undetermined period of time.
One of the reasons for a law, any law is to make the commission of a crime in that area unpalatable. The illegals now know they may get stopped for any reason if police deem them to have committed any offense and from there have their status checked which could lead to incarceration for what could be an extended length of time.