I don't think so, English incorporates words from other languages all the time. I think there are Americans that are against things being written in foreign languages, but not against incorporating foreign words as part of the English vocabulary.
Indeed, the linguist Ronald Wardhaugh shows in his historical studies that one of the reasons English has won out over French as a world language is that English makes no attempt to be "pure" but rather adapts to how speakers use it, making it more user-friendly as a second language for speakers around the world.
Some countries have a linguistic policy that limits this, European Portuguese (this is not generally the case in Brazilian Portuguese), Icelandic and French for example.
