The White House announced on July 23, 2026 that the Trump administration would unveil the latest stage of its trade policy, with US Trade Representative Jamieson Greer scheduled to detail next steps later in the day The Guardian.

White House press secretary Karoline Leavitt, when asked about Trump's plan, said Greer would announce the steps "later today." She added: "I don't want to get ahead of him, so I would just tell you to stay tuned for more details" The Guardian.

The timing matters. The administration's current 10% tariff regime — a blanket import tax applied to much of the world — is due to expire on July 24, 2026 The Guardian. That regime was established in February 2026 as a replacement after the US Supreme Court ruled that many of Trump's earlier tariffs were illegal The Guardian.

Greer appeared before US senators on July 22, 2026, where he faced questioning on the economic effects of the tariff program. Senator Elizabeth Warren asked whether tariffs had increased prices for American families. Greer answered "No" The Guardian.

Greer told senators that core inflation — which excludes volatile food and energy prices — fell to 2.6% year on year, and that this was "much better than in January 2025" The Guardian. That figure sits against a backdrop of broader price pressure earlier in 2026, when US inflation surged to a three-year high The Guardian.

The broader context here is a trade policy trajectory that has moved through three distinct phases in under a year: the initial tariff program, the Supreme Court's February ruling invalidating much of it, and the interim 10% regime now reaching its expiration. With that interim measure lapsing July 24, the administration faces a decision point: extend or modify the current framework, construct a new tariff structure designed to survive legal scrutiny under the Supreme Court's ruling, or allow the regime to lapse entirely.

Greer's testimony before senators suggests the administration is anchoring its defense of the tariff program in the recent decline in core inflation. The tension between that 2.6% figure and the three-year inflation high earlier in 2026 is the substantive fault line. Senator Warren's questioning signals that the Democratic caucus is prepared to challenge the administration's framing by pointing to that earlier surge.

For trade watchers, the key question is whether Greer's announcement will introduce a structurally different tariff mechanism or extend the 10% regime under a new legal rationale. The Supreme Court's February ruling narrowed the administration's authority, meaning any successor framework will need to operate within constraints the original program did not face. Leavitt's reluctance to preview specifics leaves the scope of the announcement genuinely open.