It's perfectly reasonable to enjoy most of the things about a country and still find issues with it. It's also perfectly reasonable to question and complain about stuff when you think it's wrong. Not doing that, putting your fingers in your ears and running away is arguably the worse crime.
Which is funny since many of the US wealthy regard their homes outsides the States as bailout refuges if the situation in the States gets hostile to them. (Which is probably a good insurance policy...)
The inequality adjusted HDI says there are exactly 15 countries better than the US in the world.
Also, don't you find it a tiny bit ironic that your response to him was childish and immature e.g. "Well you can leave, if you don't like something". If everyone was like you, we'd have no progress, no revolution, and no change.
Just because other countries do bad things, it doesn't mean that you should put up with your representatives doing the same bad things (and blatantly lying to you about them).