Trump still doesn't get free trade

President Trump is taking a gamble this week on trade. He is threatening to impose massive tariffs against Chinese goods, which would be bad for American consumers but perhaps much worse for an increasingly wobbly Chinese economy.

As bad as that all sounds in principle, this is a calculated risk that Trump is taking with a worthy goal in mind. He wants to force China's regime back to the negotiating table, to hash out a trade deal that will end, among other things, China's policy of expanding its economy using...