International trade in animal products creates welfare asymmetries where importing countries may import products that would be illegal to produce domestically under their own welfare standards.
International trade welfare asymmetry creates a structural incentive against welfare improvement — domestic producers who invest in better welfare systems compete against imports from systems whose lower standards reduce costs. This dynamic undermines market-based welfare progress and creates a political economy problem that only trade policy can resolve. Mirror clause legislation that applies domestic welfare standards to imported products would level the playing field while driving welfare improvement globally through trade leverage.