I think that is important. Measuring bilingualism is done by tests. Language experts can measure it through tests, but I am not sure that an appointment as important as justice of the Supreme Court should be decided by an individual’s degree of bilingualism. The possibility of rising to the Supreme Court being determined by failing a test that is now given to public servants, to senior federal public servants, is a little alarming.
On May 30th, 2017. See this statement in context.