Okay, here's another question; what qualifies as fluency in a given language? I have a minor in Spanish, have worked with migrant farmers where I had to use Spanish to communicate. I've performed assessments and therapy sessions in Spanish on a limited basis. I speak and understand well enough to communicate and if I don't understand something I ask for clarification. I'm a bit out of practice, but my Spanish "ear" comes back rather quickly with practice.

What are some of the ethical and liability concerns here?