The departments translate the documents that they provide to us. This is the explanation that our clerk gave me, and it seems valid. However, we receive some documents that do not appear to have been translated as thoroughly as others. I imagine that all documents provided through the clerk to us for our work are revised. However, that is not necessarily the case for external documents, which may not be subject to the same quality standards.
I want to make sure that all external documents are revised, but I don't know how this can be formalized. In translation, there are embossed seals that confirm that the translation has been revised and certified. Regardless of the mechanism, I think that everything that is sent and presented to us should have been first revised and approved by the Translation Bureau, whose services the House uses.