American tariffs on Canadian goods will cause significant economic harm to both countries. The fortunate part is that a market economy is wonderfully robust and can usually take a hard beating from external factors (such as economically illiterate foreign politicians imposing unjustified tariffs), and recover reasonably well after the initial short-term pain passes. The key phrase, however, is “market economy.” A swift and solid recovery relies on letting markets work, and not having meddling politicians sabotage it by moving us towards a more socialized system for political gain.