Are they going to force him to either learn Spanish or get an interpreter? If he can't understand what they want, he can't give it to them.
So the bar down the street should have a sign reading "Se habla CERVEZA."
RE: "Are they going to force him to either learn Spanish or get an interpreter?"
Careful what you wish for. Stranger things have happened...
e.g.:
http://www.acebo.com/faqmed.htm
http://www.calendow.org/reference/publications/pdf/cultural/ca_standards_healthcare_interpreters.pdf