Well the key is to make them feel that you're going there as a tourist and you want to get back as soon as you're done with your visit. I think having a proper itenary on where you're going in the US will help. I've gone for a business visa and I didnt have any trouble at all. They didnt even look at any documents except my passport. Besides I wasnt very keen on going and only did it coz i really had to.

I dream of a better tomorrow where Chickens can cross the Road without having their motives questioned - Unknown