House Republicans blocked a Democratic subpoena and walked out of a congressional hearing on 25 March 2026, shielding Donald Trump Jr. from testifying under oath about a record-breaking £484 million ($620 million) Pentagon loan awarded to a company backed by his venture capital firm just three months after it invested.
The confrontation erupted during a hearing of the House Natural Resources Subcommittee on Oversight and Investigations, which was officially convened to examine America's critical-mineral supply chain. Congresswoman Maxine Dexter (D-Ore.), the top Democrat on the panel, moved to subpoena the President's eldest son along with Pentagon official Patrick Witt and Vulcan Elements chief executive John Maslin.
