How to Burn a Region-Free DVD?

First of all, not trying to violate any copyright laws here. I need to copy a DVD of our game and send it to a coach in the States, but the DVD regions are different, so our DVDs don’t work over there. Our region in Europe is like 3 or 4, in the States it’s 1 I believe. Does anyone know how to make a region free DVD?
Thanks.