After weeks of internal debate and mixed signals, Trump plans to reveal details of his broadest import tax yet in a Rose Garden ceremony, the first of his second term, featuring his full Cabinet. The announcement follows the president’s signing in mid-February of a memorandum calling for a “fair and reciprocal” trade plan to rebalance the global trading system.

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In recent days, Trump has spoken favorably of the simpler approach that would impose an identical tariff of roughly 20 percent on goods from almost all nations.