CA requires a front plate to be mounted on any motor vehicle issued two plates.
I decided to figure out how to use the supplied front plate bracket without drilling as others in this thread have shown, you can move it down a bit and use ZIP ties to secure it. I altered it a bit by moving the bracket down only by one ridge in the lower grill opening and using four zip ties to secure it along with some industrial velcro to make sure the top half does not rub the front facia/clear bra.
Only slightly different than some other suggestions, but I thought I would share my approach.