Washington's law and lobbying firms are telling corporate clients, tech companies and defense contractors in particular, to prepare now for subpoenas, document demands and public hearings if Democrats win the House or Senate on November 3. WilmerHale, a large Washington-based firm, wrote in a September 24 client alert that Democratic leaders have signaled "oversight of the Trump Administration, focusing on perceived corruption and accountability; affordability issues; and scrutiny of the technology sector, focusing especially on artificial intelligence." Because the White House is unlikely to cooperate, the firm expects committees to "turn quickly and aggressively to third parties, including the private sector." The White House says Democrats plan "to obstruct and baselessly target President Trump's commonsense agenda." None of it happens unless Democrats win: polls suggest they are favored to take the House and have an edge in the Senate, Reuters reported on October 13.
Why companies, not just the administration
The firms' central point is that investigators who are stonewalled by the executive branch go to the companies that dealt with it. WilmerHale lists companies that received government contracts or deals with the administration, companies that got tariff exemptions or other regulatory relief, and contractors carrying out immigration enforcement. It notes the precedent runs both ways: during the Biden administration, House Republicans sent investigative requests to private companies seeking their communications with the executive branch. Some of that is already starting. "Some of our clients have received letters, regarding a variety of issues, including their interactions with the administration," Kevin Barstow, an O'Melveny attorney who handled investigations in the Biden White House, told Reuters. "Everything that has gone on in the first two years of this administration is fair game for investigations," said Kevin Edgar of BakerHostetler, a former chief counsel of the House Financial Services Committee.
Defense contractors
Democrats are "zeroing in on the Pentagon and defense contractors" as they prepare to examine potential conflicts of interest, Bloomberg reported on October 8, citing lawmakers and people familiar with the plans, and companies with Pentagon contracts are "particularly vulnerable" partly because Congress expects the administration to "ignore or slow-walk" its requests. Sen. Richard Blumenthal of Connecticut, the top Democrat on the Senate's investigations subcommittee, has asked the Pentagon's inspector general to look into reports that defense companies backed by 1789 Capital, where Donald Trump Jr. is an investor, and American Ventures, where Eric Trump is an investor, received billions of dollars in government awards. "We need to look into whether Trump's sons are profiting from investments in defense contractors that involve insider information or contracts awarded in ways that compromise defense interests," he told NOTUS. Rep. Adam Smith of Washington, who would chair the House Armed Services Committee if Democrats win the House, has called the Golden Dome missile-defense program "a project no one can explain." A former committee aide told NOTUS: "If you have anything that you think is going to draw their ire, then you should start looking now for consultants who can help you prepare."
Tech and artificial intelligence
Tech oversight may not split along party lines. At a September 17 briefing hosted by Holland & Knight with House Judiciary Chairman Jim Jordan, a Republican, and the committee's top Democrat, Jamie Raskin, panelists predicted that AI and technology "will be a focus regardless of which party wins the majority," naming data centers, data privacy and civil liberties. WilmerHale expects inquiries into AI's effects on jobs, its energy demands, its safety and "the use of AI in defense, intelligence, and law enforcement contexts," along with prediction markets and stablecoins. POLITICO reported that House Democrats are discussing a select committee on AI, led by Reps. Ted Lieu and Bill Foster, with subpoena power. "Tech oversight will bring together some strange bedfellows," said Jim Secreto, a Biden administration alumnus now at the firm Narrative Strategies, pointing to Republicans such as Sen. Josh Hawley and Rep. Brian Mast, who he said could join Democrats on issues like data centers' energy use and corporate ties to China. On finance, Rep. Ro Khanna told Reuters: "I absolutely think we need to look at these financial transactions, these crypto transactions, and see if any of our national security has been compromised."
The case against
Beyond the White House's charge of obstruction, some industry advisers warn Democrats about their own risk. "I think there's a chance that they could overreach," said Michael Herson, chief executive of American Defense International, which lobbies for defense companies. "At the end of the day, the ordinary American is going to wonder, how did all this oversight help improve my day-to-day cost of living?" Some records may also be harder for Congress to get: WilmerHale notes a recent Justice Department legal opinion saying executive privilege can cover some communications between the president or his advisers and private advisers outside the government, which could complicate any committee's demands for those records. The firms giving this advice also sell congressional-investigation defense services, and several have expanded those practices this year.
Sources: WilmerHale, "Looking Ahead to 2027: What Companies Should Expect From Congress and How to Prepare", September 24, 2026; Holland & Knight, "Looking Ahead: Congressional Investigations in the 120th Congress", October 2026; POLITICO Influence, September 9; Bloomberg, October 8; NOTUS, August 14; NBC News (Reuters), October 13.
