Obtain passports. The potential tourists need to get passports from their home country. In Mexico, the process to obtain a passport begins at the Mexican Ministry of Foreign Affairs. The forms vary depending on the age and capacity of the Mexican citizen soliciting the passport, but you can find all on the Ministry's website. Your family members also need to present passport-ready photos and pay a fee.
Begin the long process to get a tourist visa about 2 months ahead of time. This is sometimes the difficult part. Visit the website of the U.S. Consulate nearest to the Mexican citizen's residence. Use the U.S. Department of State's Directory to locate a consulate.
Fill out the paperwork for the Visa via the local consulate's website. The tourist Visa is called a B1, B2 or Laser Visa. You may also fill out the paperwork via the Department of State's E-visa forms page.
Pay the fee. The current process is to pay the $100 visa application fee at any Banamex bank in Mexico, and to obtain a receipt from them.
Schedule a visa application interview. Each consulate location has their own specific phone number they use to schedule visa interviews. Look for it on the tourist's consulate's website.
Attend the interview. The potential tourist should bring a passport, the visa forms and the Banamex receipt to this interview. They must prove that they are well established in Mexico and not likely to abscond in the US. Many applicants bring mortgage papers, bank statements and job records to support their application.