I fear that this law may be a backdoor route to a national ID card - with way too much sensitive info on it - which ALL OF US will have to carry with us at all times.

One way to keep a law like this and avoid the "ethnic profiing" charge is to make everyone carry proof of citizenship or legal immigrant status at all times and to stop (i.e., inconvenience and maybe cause real hardship to) people at random just to check.   Oy!