One thing I miss from France is the more subtle wines. I like big American wines, Zinfandels and Syrahs full of strong flavours. But the fashion in American wine right now is very high alcohol. I drank a 15.5% Zinfandel last night from Peachy Canyon. I didn't even know you could ferment to that level of alcohol. French wines tend to be more in the 12% to 12.5% range. The flavours are more subtle, they don't have the hot taste of alcohol.
It's not good that US wine has 1/3 more alcohol. It's a bit like the fashion for overoaked Chardonnay of a few years ago. It lacks finesse. Not to mention the effect of drinking that much more intoxicant.