Passing a driver’s license test is for many American teenagers a rite of passage impeded only by parallel parking. Yet undocumented immigrants in California have long been blocked from obtaining the two-by-three-inch piece of plastic, no matter how adept they may be behind the wheel. A bill signed into law by Gov. Jerry Brown last week will finally allow that population to apply for driver’s licenses, albeit with distinctive markings and limited uses.
State officials…