When thinking if I had enough and precise information to accurately write about the topic  “Crossing the Border” I read that "sometimes it feels as visa and passport requirements change daily!" and they do. I’ve seen the visa for US citizens visiting Brazil be valid for 10 years, 5 years, etc… Seriously, Brazil practices the so-called "reciprocity" policy in terms of visa requirements. So, as the US requires visas for Brazilians visiting the US, so does the opposite. The most accurate and up to date information always comes from the embassy. For US citizens traveling to Brazil, please refer to: http://www.brasilemb.org/index.php?op... Tourists from all other countries can also use the easy tool at www.visaornot.com to check if they need a visa or not.