I have to agree with pat and Alexandre.

I spent 30 years dealing with immigrants who had misbehaved in the USA.  Most were illegal aliens, by the way.  Around 1980 a study showed that about 25% of the jail population in Los Angeles County was composed of illegal aliens, but closer to the border in Orange and San Diego Counties the figure was about 33%. 

My experience has been that about the only way someone in Brazil gets arrested for drunk driving is if they have an accident.  In one incident, one of my neighbors was threatened at gunpoint by an intoxicated and armed attorney.  The Civil Police arrested him.  I don´t know what the result was, but the going sentence for such crimes here is about two hours of community service picking up gum wrappers at a day school.  If people want to drink, that´s their business.  If they drive and endanger my life and that of my friends and family, it´s my business.  I have no pity for drunk drivers.  Don´t do the crime if you can´t do the time.

Here in RS I hear stories about Uruguayans and Argentines doing stupid things.  I have never seen any such thing here, but I don´t go to bars and other interesting places.  If you have been in towns along the Mexican-US border, you have seen Americans (mostly young) doing stupid things too. I´ve seen college kids in Tijuana and Ensenada walking down the street about as drunk as it´s humanly possible to get.  In the USA they would be arrested for being drunk in public.  The Mexican police seem to be tolerant.  Tourists bring money, and Mexico needs the bucks.  (I would not, however, want to have a car accident in Mexico while I was intoxicated.  Not a really good idea.)  Some people lose control when they are far from home and do things they would never do in their own towns or cities.  I guess their true colors come to the surface.  I don´t recall reading in local newspapers about foreigners breaking laws.  I do recall, however, reading of foreign victims.  A busload of Brits, for example, was robbed about a week ago in Rio.