New Members of Defense and Surveillance Committee Bet Millions on AI Leaders

According to disclosure documents filed with the U.S. House of Representatives, John McGuire, a first-term Republican congressman representing Virginia’s 5th District, purchased common shares of Microsoft and Nvidia on January 21 and 30, respectively. In each transaction, he invested between $1,001 and $15,000—equivalent to roughly 1.3 million to 19.5 million Korean won.

McGuire, a former Navy SEAL turned businessman, took office in 2025 and currently serves on the House Armed Services Committee and the Committee on Oversight and Accountability. Notably, he sits on the Armed Services Committee’s subcommittee on cyber and information technology, which oversees the Department of Defense’s adoption of cloud and artificial intelligence solutions and related defense procurement. His personal investments in two leading suppliers of AI and cloud infrastructure have therefore raised questions about potential conflicts of interest.

Microsoft Corporation (NASDAQ: MSFT) recently reported quarterly revenue of $81.3 billion, including $51.5 billion from its cloud division—both figures exceeding market expectations. Strong demand for AI and cloud services, led by Azure, drove this performance. Nevertheless, concerns over massive data-center investments for AI and rising capital expenditures have weighed on the stock, which has traded around the $400 level as investors balance robust results against spending risks.

NVIDIA Corporation (NASDAQ: NVDA), widely viewed as a primary beneficiary of the generative AI boom, has displayed high volatility—pulling back in recent days before bouncing back amid renewed interest in large AI spending plans announced by major tech firms and OpenAI. Wall Street projects that big tech companies’ capital expenditures could reach $650 billion by 2026, much of it directed toward AI infrastructure, a trend analysts say bodes well for Nvidia. At the same time, they warn of risks from customers’ moves to develop in-house chips and from possible regulatory constraints.

Against this backdrop, the revelation that a member of Congress who helps oversee defense budgets and semiconductor export controls to China has directly invested in Microsoft and Nvidia could reignite U.S. debate—and calls—to prohibit individual lawmakers from trading individual stocks.