About not hiring asians, that was just a rumor. But if you look at the EK open days and assesments you can see that all the locations are in non-asian countries. but its just a rumor.
You have to wait 6 months i think before you re-apply.
But if its an open day why not just try again? Dont do it if its an assessment day coz they can check records.
Just go to the US and do your open day there! why not.