Beer German Purity Law

What do American beer can meet the German purity law "?
The Reinheitsgebot applies only lagers in beers so you can delete right off the bat. The addition of barley malt is not a no, no, so you can eliminate most if not all, of the megabrews, using rice or corn for a lighter flavor and color. That more or less restricted to the craft brewers.
WEST Beer – Glasgow