...continued
We seem to be able to embrace culture and traditions from other cultures, wrapping ourselves in ideals of diversity and acceptance....unless those traditions threaten our "liberal" perceptions.  It is not the music or colorful clothing or holiday celebration that we clash with...but the more traditional beliefs in marriage and family for instance.  We are not as warm and welcoming as we pretend.  

Finally, I think we use language as a cover.  Got to tell you...I have been blessed to be able to edit doctorate level work for some foriegn born priests studying in Rome - those papers are submitted in English.  The deep and complicated concepts that are articulately presented would surprise you.  The command of English for priests from India, Poland, and Philippines that I have worked with is astonishing.

Accent is a different problem, but most priests are not insulted when asked to speak slower or repeat themselves.  All is takes is politely mentioning it...