an independent canadian policy on emissions standards should seek to predict more stringent future epa requirements, and get a head start on canadian productive capacities, so that firms can choose canadian production over american production in the long run.

further, american unions should see the folly in the epa rollback and seek to prevent management from what is bound to be a pointless regression, in the long run.

and, this logic is broadly applicable.

if you want investment language, canada should not be disturbed too much by short term fluctuations, and focus instead on long term predictions.