It's an interesting question when you consider that in at least two university mathematics department rankings[1][2], the US holds 7 of the top 10 global spots. One could argue that for whatever reason, many of the professors, researchers and postdocs at those schools learned math in other countries, but, if these lists are to be believed, the US does have the richest mathematics knowledge in the world. So two questi…
US society/culture in general is the main cause of this problem as most people here do not value math. Math requires deep, creative and original thinking and thinking is rather difficult to perform act. It seems that the US culture derides analytical thinking in general, with many popular public figures flaunting their "inability to do math" as some sort of great achievement and sending out a loud and clear messages,…
That is absolutely not true of anything the average non-math-major has ever been exposed to under the heading "math."
It's rote symbol manipulation requiring diligence, practice, and attention to detail. American K12 math education asks for fast and reliable algorithm execution, not insight.
Only math majors and attendees of a few exceptional private high schools will ever seriously engage with proofs.