There are countless organisations in the Empire that have grown in influence and membership beyond the confines of a single nation. These groups and institutions are commonly referred to as sodalities. Most of them don't benefit from any formal recognition by the Imperial Senate, and those with subversive or criminal intent have every reason to avoid it. However, if a group wishes to wield power within the Imperial government, they must petition the Senate to pass a motion to recognise them as an Imperial sodality.