I can show you insane strategies that will make huge sums of money on demo or back test but there's no way you would sleep at night on a live account or even take the trades when your own money is on the table.
do you seriously think that practicing on a demo account is the same as a real account? Trading is 10% strategy and 90% psychology. So do you think there is the same psychology in play on a demo account as there is on a live account?
let's get real. 95% of forex traders fail to make any profit. After blowing a couple of accounts they walk away. These stats available from brokers and prop firms.
I don't have to take a flight to get to the bathroom. 2 trips to Bangkok plus a hotel room and time wasted is more expensive than mailing your passport and application to an agent in Bangkok who can do it for you.
He's not going to have a problem because he hasn't done anything wrong. But in the case of someone who has been banned for a long overstay for instance a new passport won't help.