Taxes on WSOP-cashes

[Hardgrove]

Hey,

Im currently living outside the US, but going to play the WSOP Main Event. I know I can play the event as a foreign (because of dual citicenship), submit an ITIN number and then only pay taxes in my country of residence (which is the standard procedure for non-US players). But I was wondering how high the taxes are in the US on money won this way? And IF they are lower than in my home country, I would like to be able to just play the event as an American with no connection to my country of residence...? Is that possible? I dont wanna do anything illigal, im just very unsure of how the situation is.