Free Trade: Both political parties these days give short shrift to the idea of free trade. It's a pity, because, as a new report shows, it's the key to a better life for all. In its "2018 Index of Economic Freedom," the Heritage Foundation reminds us that not only is the idea of free trade appealing, but the evidence for its importance in raising standards of living is overwhelming. "Countries with the most trade freedom have higher per capita incomes, more secure food supplies, and cleaner environments," the report notes. Or, put even more simply, "Citizens of countries that embrace...