According to the nice letter from Mr. Samson, your department is working on a solution, on preparing a bill to solve the problem.
I will quote Subsection 16(1) of the Official Languages Act.
16(1) Every federal court, other than the Supreme Court of Canada, has the duty to ensure that: (a) [...] every judge or other officer [...] is able to understand English [...] (b) [...] is able to understand French [...] (c) [...] is able to understand both languages without the assistance of an interpreter.
So Section 16 states that all judges must understand French and English, with the exception of Supreme Court justices. What do you think of that?