1. United States
2. Calif.
3. Letter

I am writing to express urgent concern about the recent exposure of a Signal group chat in which senior members of your administration discussed U.S. military operations in Yemen, including strike timings and deployment of aircraft. The fact that this information came to public attention only because a journalist was inadvertently added to the thread is both alarming and revealing. While the inclusion of The Atlantic’s editor was unintentional, it served the public interest. Without that accident, the American people would have remained unaware that high-level military decisions were being coordinated over a non-secure, unofficial platform—completely outside normal oversight or accountability channels. This raises serious questions: • Who authorized the use of Signal for sensitive military discussions? • How often are such shadow communications occurring without public knowledge or congressional oversight? • What guardrails, if any, exist to prevent this from happening again? The American people are entitled to a government that exercises the highest standards of discipline and transparency in matters of war. Informal backchannel decision-making on encrypted apps not only undermines national security but also erodes democratic accountability. I urge you to take immediate action: 1. Launch a formal investigation into the creation and use of the Signal group. 2. Suspend all involved personnel pending review. 3. Issue a public directive banning the use of unofficial messaging apps for sensitive military or policy coordination. 4. Reaffirm the administration’s commitment to lawful, secure, and transparent governance in all matters of national security. This is not a minor misstep—it is a systemic failure with serious implications. The public deserves answers and action.