[snip]high-level push-hands (which has never been seen in the U.S.) [snip]
Mike, I've seen what I regard as high-level push-hands here in the US (Chen Xiaowang, etc.). They were demonstrations and one-on-one; maybe you're referring to high-level push-hands competitions. That is fairly rare in China too.
Chris, thanks for the heads-up on the Columbus event. Depending on the date in March, I may be able to make it.