I don't know why you posted this again... but I'll just copy and paste my response from the other post:
If you were refused a visa, you are ineligible for the visa waiver.
When does a national of a VWP country need to apply for a visa instead of using the VWP?
Nationals of VWP countries must meet the conditions noted in the section above (Which travelers may use the Visa Waiver Program to enter the United States?) in order to seek admission to the United States under the Visa Waiver Program. Travelers who do not meet these conditions must apply for a visa. In particular, a visa must be requested if the traveler:
Wants to remain in the United States for longer than 90 days, or envisions that they may wish to change their status (from tourism to student, etc.) once in the United States;
Wants to work or study in the United States, wants to come to the United States for other purposes not allowed on a visitor visa, or intends to immigrate to the United States;
Does not have a machine-readable passport (MRP) issued or renewed/extended before 10/26/05, or is unable to meet other requirements outlined above for passports issued on or after October 26, 2005 or October 26, 2006.
Intends to travel by private aircraft or other non-signatory air or sea carriers to the United States;
Has been refused a visa or admission to the United States before, or did not comply with the conditions of previous VWP admissions (90 days or less stay for tourism or business, etc.); or
Has a criminal record or other condition making them ineligible for a visa (see Classes of Aliens Ineligible for Visas ).
Visa Wiaver Program from the State Department.
It'll be in their computers, so don't think you'll get too far.
If you do try to enter the US, even as a stopping point, they will likely take you aside, question you extensively, then force you to immediately buy a ticket home (i.e. deport you on your dime).
You'll need to fly directly to Mexico, without stopping anywhere in the US (Hawaii is part of the US, which too many people forget), and then travel on to Brazil from there.
Ask a stupid question....