FOUR of the top 13 airports are in Japan! You have to go down to #28 before you find the first one in the United States.
TSA cattle car boarding is a direct function of our unwillingness to profile. Any sane country in the world scans their airline passengers carefully. Only ours are obsessed with profiling "stuff" rather than people.
The main problem with U.S. airports is age. Most of the big U.S. airports are over 60 years old. They have generations of retrofitting and rebuilding layered over them and they are often surrounded by aging and substandard transportation infrastructure. For some of them, tactical nuclear weapons would be a good start to a proper overhaul.
Big Asian hubs tend to have fairly new airports, and they're nice. Secondary Asian airports are hit and miss; China still has provincial airports that make you miss Detroit or Philadelphia, though the Chinese will rebuild these as well in due course.
In an ideal world, we'd build new airports in the U.S. as well, but as a practical matter, airports are too big, too expensive, and too embedded in legacy transportation systems to be easily moved. Big U.S. cities are also surrounded by sprawling suburbs and a new airport would have to be located outside the suburban belt, which would make it highly inconvenient.