That practice is already in place. American officers are already active in a number of airports in Canada and they deal with passengers with limited bilingualism or who are unilingual francophones. That is one of the practices already in place. We have no knowledge of any incidents in terms of language.
When selecting officers, U.S. Customs and Border Protection gives priority to those who are able to converse in French. I have come across American officers stationed in Canada who were able to speak French.