NEW: President Trump explains the reason why he's renaming Lake Ontario to "Lake America," and takes aim at the Canadian government. "They want to be treated l

NEW: President Trump explains the reason why he's renaming Lake Ontario to "Lake America," and takes aim at the Canadian government. "They want to be treated like a state. But they're not a state. " "We lose on average over the last 15 years, $60 billion a year carrying Canada. So we just can't do…