Water use from watering your lawn is pretty insignificant when put up against other aspects of daily American life, or things like industry. I hate this sort of consumer side rhetoric for climate change. Change all the lawns in America to gravel you want, ban all the straws, none of that will make an impact when the biggest impact by a mile is from industry protected by a profitable regulatory environment their own lobbyists have designed. Better to go straight for the jugular when you need to kill Goliath than to try hitting him with a Nerf Dart.