The mission of the CBA is indeed multifaceted. It does have that member interest facet to it that gives the wonderful insurance rates you talk about from the CBIA. It also has a public interest element to it that is well established in the mission statement adopted by Parliament.
It has the elements of improvement of the law in the administration of justice, equality in the justice system, and promoting the rule of law. All of these general principles, to which many of the statements the CBA makes before parliamentary committees relate, fit into that public interest mandate of the association.