I have always thought that the US was a perfect country has very functional health, economic, and political systems.
There is an avalanche of people who will violently disagree with you on the economic and political parts, but it's easy to be naive and believe that the US can offer good healthcare for all (provided that you can afford it).
But, that's not true either. Even though they have some of the best hospitals, there is too much bureaucratic activity from insurance companies to let you get the best possible treatment. It's not uncommon to get a mediocre treatment just because of some silly policy made by the hospital mangement.
I thought all Americans have access to cheap and quality medical services until I read that over one million Americans go on medical tourism in Mexico yearly.
It's pretty dangerous to cross the border to Mexico with all these drug gangs roaming about. It kind of puts out the anti-immigration rhetoric flames as well.