We already have the metric system. An inch is defined as 2.54 centimeters. Et cetera. I can't think of a single way in which we're NOT metric, except that stubborn people refuse to let go of gallons, miles and pounds. Every item you buy in the stores will be measured in metric units. Just because we call it a gallon doesn't mean it isn't actually 3.785 liters. And just because the serving size is a cup, doesn't mean…
America sucks and is like the worst thing to ever happen to the world. Or something, it all blends together eventually.
Oddly no one ever makes a serious push to ban languages other than English or Mandarin Chinese throughout the world, or currency other than USD which would actually have beneficial effects on global interaction. Instead they compare the U.S. to Myanmar as if Americans should seriously be offended by that.