Sorry, but Charlie is wrong. The visa application fee is standardized at $131 for each country on earth. However for certain countries a visa issue fee is levied. For Brazilian tourists (B-2) no additional fee is asked for; for Brazilian business travel (B-1 or B-1/2) the issuance fee would be $60 and the visa, if apporoved will cost $191.http://travel.state.gov/visa/frvi/recipr�� ..
The fee for a tourist visa to the U.S. is the same for anyone anywhere in the world. It is $131.00 usd. See site below.