For many on the border, we've grown accustomed to hearing two very different accents and we know what words are trying to be spoken, but others won't be able to understand and may even be offended. Por ejemplo, a person with a strong Mexican accent (and I say Mexican because the Mexican version of Spanish is much different than Argentina's, Puerto Rico's, or Spain's) trying to say a couple of commonly used English words. What I always find amusing is the pronunciation of the word "beach" which for those who've never heard it ends up being said as "bich" and the word "focus" as "fukus" sometimes offending others.
This is a two way street. For those unfamiliar with Spanish and trying to use a common word, such as the word for kitchen "cocina" ends up being said as "kochina" and like the previous examples is a bad word. And even though there are more sounds in English, many Americans can't roll their R's nor pronounce LL as a Y so "tortilla" ends up as "torttillia."
And yes I am not making this up. I've heard these words mispronounced as well as numerous other words but I'm not really upset about this. In fact I'm glad that people are trying to speak two languages. For many Americans, they've never even tried to become bilingual. The rest of the world speaks two, at least three languages, but Americans only bother to speak English.
Living on the border gives you a unique prospective. Canadians speak English and French. Mexicans speak English and Spanish. Americans speak English. I hope this change soon. Learn a new language. You don't have to be perfect but learn enough about it so that you can understand it. Not only am I trying to better my Spanish but I'm also trying to learn Japanese which is a difficult language to teach yourself especially since it comes from a different branch of the language tree, but it is at least a start and I'm picking it up fairly quickly.
Learn Spanish. Learn French. Learn German. Learn Arabic. Learn Farsi. Learn Mandarin. Learn Malay. Learn Cantonese. Learn Japanese. Learn something so that Americans can start to change how the rest of the world views us.