There are some excellent beers in The USA, (and Canada too,) and I speak as someone who doesn't mind a bit of hay and dead dog in my drink.

Some of the microbreweries knock out some excellent beers to what I have seen and tasted. However, some drinks (lagers in the main) are brewed to taste better when cold and most of the American beers fall into this category. Like their more commercial cousins, they fall flat on the floor if you try them at room temperature, which is how Old Scroat is brewed to be served....

Commercially, they will take off, just like some of the fruity Belgian beers have, but they compliment rather than replace the warmer bitter that blokes with beards rave over.