Leading the world toward an open multilateral trading system under the 1947 General Agreement on Tariffs and Trade (GATT, which became the WTO in 1995) was one of America's crowning achievements after World War II. The system works precisely because members willingly commit themselves to open, rules-based trade policies. Among other things, this ensures that foreign traders have the same rights as domestic nationals when disputes between them arise, and that the principle of nondiscrimination among trading partners prevails, except in the case of preferential trading arrangements.

Trade flourished under the GATT, with the US leading negotiations for multilateral tariff reductions and the removal of other trade barriers (including quantitative restrictions). In later years, developing countries witnessed the success of open markets and decided to start dismantling their own highly protectionist regimes. For most, this resulted in a remarkable acceleration of growth in output and trade. For more than a half-century, world trade grew roughly twice as fast as world GDP.

This growth was far from smooth, of course. Significant slowdowns followed the oil shocks of the 1970s, the Asian financial crisis of the late 1990s, and the Great Recession a decade later. Growth in world output and trade has resumed since the 2008 global financial crisis, but not as rapidly as in the years preceding it. And China, following an overhaul of its trade policies in the 1990s and its accession to the WTO in 2001, emerged as the world's largest trading power.

In addition to reducing domestic poverty and improving living standards for its own population, China's dramatic economic ascent was bound to raise issues with other countries. But thanks to the WTO and its dispute-settlement mechanism, there was a multilateral forum where these issues could be addressed - that is, until Trump came along.

Although Biden has reasserted America's commitment to internationalism and multilateralism, he has moved slowly to repair the damage that Trump did to critical institutions like the WTO.

Nor has Biden reversed Trump's withdrawal from the TPP. Now called the Comprehensive and Progressive Agreement for Trans-Pacific Partnership, US membership in this 11-country pact would be a boon for US exporters. Currently, US companies are at a distinct disadvantage relative to their competitors in CPTPP countries, because their exports to those economies are subject to duties that do not apply to exports from members of the bloc.

Biden also has not ended the trade war with China, even though that effort has utterly failed to achieve its stated objectives. While the US bilateral trade deficit with China has fallen somewhat, the deficits with Vietnam, Malaysia, and others have risen commensurately as their exports have replaced those from China.

Although the Biden administration has finally agreed to a new director-general for the WTO, it has done little to reduce Trump's tariffs, and has even announced that it will strengthen "buy American" provisions in government procurement contracts. Biden says he wants to protect American jobs, yet the Trump administration's tariffs on imported iron and steel, which have cost a net total of around 75,000 jobs (leaving out the additional losses caused by other countries' retaliatory tariffs), remain in place. If Biden really wants to help American workers, he should recognize that exports create good jobs, and that the export sector's contribution to US GDP has doubled as a result of open multilateral trade.