Interpreters are impartial
Interpreting impartially can be very difficult at times, especially if the interpreters vehemently disagrees with what is being said or is forced to use swear words they would never utter in their own conversations.

Another challenge is that many hearing professionals do not understand that interpreters will not offer personal opinions or give out confidential information about deaf clients. Sometimes a potential employer might ask the interpreter for their impressions of a deaf job applicant’s qualifications or a psychiatrist will ask for the interpreter’s opinion of the deaf person’s mental state.

A deaf person may also put the interpreter on the spot by asking the interpreter’s opinion about the professionals involved in the assignment. A professional interpreter will resist any attempts to drag him or her out of a state of impartiality and stay in his or her role of an interpreter.

http://carolafinch.hubpages.com/hub/Characteristics-of-Effective-Sign-Language-Interpreters 11092015