I've heard claims both ways: "Interracial marriages are more likely to
end in divorce", supposedly because they have odds stacked against
them and have to deal with cultural issues and discrimination; and
I've also heard, "Interracial marriages are more likely to last",
supposedly because the couple has a chosen each other from a larger
pool of potential mates (as opposed to just within their own
respective races), and that they've had the opportunity during dating
to deal with discrimination and its implications.

Could you please get me hard statistics on this matter, preferrably
for Canada and the United States (though other countries are also OK)?