Interpreters must learn and practice a strict code of ethics set by their regulating organization. These rules are designed to protect both the deaf and the hearing clients, and the interpreters themselves.
On the surface, this code of ethics looks straightforward and logical, but in actuality, it takes a special kind of person to follow them.
I did explore the idea of becoming an interpreter at one time. I studied and decided the profession was not for me. It required a high level of confidence and skills that I did not have. I will interpret informally for deaf friends if they ask me, but that is all.
Some people think that they can become an interpreter by taking a few sign language classes. Sign language, like any other foreign language, requires years of study and a lot of time in the native community to master.