The appellant challenged the vires of the Federal Child Support Guidelines, enacted by the Governor in Council under the Divorce Act, arguing that the GIC exceeded its authority because the Guidelines require the payer parent to bear a greater share of child-related costs than the recipient parent.
The Supreme Court held that the reasonableness standard under the Vavilov framework presumptively applies when reviewing the vires of subordinate legislation, and that the 'irrelevant, extraneous or completely unrelated' threshold from Katz Group is no longer good law.
Applying reasonableness review, the Court concluded that the Child Support Guidelines fall within the GIC's extremely broad statutory authority under s. 26.1 of the Divorce Act and are therefore intra vires.
The appeal was dismissed with costs.
