Trump tightens the screws on defense contractors buying from China

Somewhere in a Chinese factory right now, a machine is stamping out a rare earth magnet that could end up inside a U.S. missile, and until this week, the Pentagon had no reliable way to force American weapons makers to stop that from happening. President Trump signed an executive order on July 20, 2026 aimed at closing that gap, ordering the Department of War to choke off defense contractors’ ability to keep buying critical materials from adversarial nations and to map, component by component, where every part of a weapons system actually comes from.

The order builds on a law already on the books, 10 U.S.C. 4872, a section of federal statute that bars defense contractors from sourcing certain sensitive materials from countries the government considers geopolitical threats. That law has existed for years, but contractors have routinely obtained waivers to sidestep it, and the White House’s own language in the order accuses the defense industry of having “historically under-prioritized domestic production and resilience.” Starting January 1, 2027, the Secretary of War will stop issuing those waivers by default. A contractor that still wants an exception will have to submit a formal mitigation plan proving it exhausted every effort to find a compliant supplier, spelling out exactly how it plans to remove the non-compliant material from its supply chain and on what timeline, and simply failing to develop a domestic source will no longer count as an excuse.

Peter Navarro, a White House counselor to the president, framed the stakes in blunt terms to reporters, saying a supply chain that runs through an adversary nation “is a strategic exposure, not an accounting detail.” His warning lands against a backdrop that has been building for years: the COVID-19 pandemic exposed just how dependent American industry, including the defense sector, had become on Chinese manufacturing, and more recently Beijing has used export controls to withhold rare earth elements and other critical minerals the Pentagon needs for missiles, aircraft and other advanced weapons systems. China dominates global processing of many of these materials, and neodymium, a rare earth metal used in the powerful magnets found in guided munitions and radar systems, has become a particular flashpoint after Chinese export restrictions rattled manufacturers across multiple industries this year.

Beyond the waiver crackdown, the order pushes the Department of War into far more granular oversight than it has historically exercised. Within 180 days, the Secretary must develop regulations requiring every prime contractor and subcontractor, no matter how far down the supply chain, to produce what the order calls an “indentured Bill of Materials,” a complete paper trail tracing every component, part and even software element in a weapons system back to the raw materials it was made from. Contractors will also have to screen their suppliers for financial instability, foreign ownership or influence, and manufacturing bottlenecks, then report significant risks to the Department within 15 days of finding them and submit a written corrective action plan within 45 days. Failing to follow through, misleading the government about the plan, or willfully ignoring it opens a contractor up to losing its contract and, in the order’s words, potential referral to the Attorney General for criminal investigation.

The order carves out a notable exception for a program known informally as Project Vault, the U.S. Strategic Critical Minerals Reserve backed by the Export-Import Bank of the United States. Materials or components tied to that reserve, or to projects backed by loans, grants or financing from the State Department, the Department of War, the Commerce Department or the Department of Energy, are shielded from the new restrictions, giving the administration a government-approved lane for sourcing minerals even as it tightens the noose on private supply chains elsewhere.

Joe Saunders, founder and CEO of RunSafe Security, a Virginia-based cybersecurity firm that works with the U.S. Army, Navy and Air Force to protect embedded software and industrial control systems from cyberattacks, said the order’s emphasis on supply chain visibility gets at something the defense industry has struggled with for years.

“This executive order gets a key critical point exactly right. America cannot secure its defense systems without knowing what is in every part of the supply chain and where every component, including software, comes from,” Saunders said.

“Supply chain mapping must go beyond compliance paperwork and instead give the Department of War and its contractors the ability to identify vulnerabilities early, reduce dependence on untrusted sources, and harden critical software before adversaries can exploit it. Visibility is the starting point but resilience must be the outcome,” Saunders said.

The order arrives as the United States remains engaged in active combat operations against Iran, a conflict that has kept weapons production and battlefield material flow squarely in the White House’s focus over the past several months, and follows a string of earlier Trump administration actions on the same theme: an April 2025 order to modernize defense acquisitions, and a January 2026 order directing the Commerce Department and the U.S. Trade Representative to negotiate agreements addressing threats to national security from imports of processed critical minerals. Taken together, those moves suggest an administration betting that the next major conflict could hinge less on which country builds the better missile and more on which country can still get the raw materials to build one when the shooting starts.