The Trump administration’s proposal for a global digital trade accord largely reflects the digital trade chapter of the yet-to-be-ratified U.S.-Mexico-Canada Agreement.

Much of the seven-page proposal the U.S. submitted to the World Trade Organization reflects and builds on USMCA provisions governing cross-border data flows, technology transfers, data localization, privacy, and cybersecurity, according to a copy obtained by Bloomberg Law.

Although America’s closest trade partners, Canada and Mexico, are likely to support the U.S. proposal, it remains to be seen whether the world’s other e-commerce behemoths—such as China and the European Union—can bridge the gaps between their respective e-commerce priorities.

The...