To revisit yesterday's Pierre Trudeau post, I should say that I don't actually think an Obama/Trudeau analogy sheds any light on anything in particular. Canadian politics is very different from U.S. politics. The Canadian language issue and the American racial issue are both important and longstanding sources of division, but they're not actually similar in any of their particulars. So you can make an analogy, but it's necessarily going to be very superficial and not really enhance anyone's understanding of anything.
Matthew Yglesias is a former writer and editor at The Atlantic.