After the Midterms: Preparing for a New Era of Congressional Oversight

Following the November 2026 midterm elections, Democrats will control both the House and the Senate when the 120th Congress convenes in January 2027. Expected committee leadership has signaled an expansive oversight agenda, backed by the majority’s full investigative authority, including the power to compel documents and testimony. That agenda will not start from a blank page: Much of the groundwork was laid in the minority over the past two years. Companies and individuals across a broad range of industries could soon be on the receiving end of a letter.

Most of the lawmakers expected to lead key panels in the House and Senate have been active in the minority. Their public correspondence and staff reports from the 119th Congress are the best signal of where they will start. A company that has already heard from a minority office may find the inquiry returning, this time with subpoena power behind it.

Key Takeaways

1. The scope of potential targets is broad and extends well beyond government officials. Committees routinely use investigations of individual companies to examine entire industries. Based on public statements and minority-side activity in the 119th Congress, we expect attention to focus on:

• Energy, AI, and data center companies, given the rapid buildout of AI infrastructure, grid and permitting decisions, federal energy policy, and consumer electricity costs. Committee staff have already directed document requests to data center developers concerning energy consumption, environmental impacts, and communications with government officials.¹
• Companies doing business with the Administration, including contractors, defense companies, and counterparties with commercial ties to the President, the White House, or senior Administration officials.
• Institutions that reached accommodations with the Administration, including universities, technology platforms, and financial institutions, which can expect questions about the terms of those arrangements.
• Technology, financial services, and manufacturing companies, particularly those that depend on tariff, trade, and procurement decisions.

In our experience, when an executive agency slows its responses, committees often turn directly to the private sector, and that dynamic is likely to intensify in 2027. A request does not mean a company is suspected of misconduct; relevant documents or communications with government officials can be reason enough.

2. A congressional investigation is not an executive branch investigation. Unlike a Department of Justice (“DOJ”) or Securities and Exchange Commission (“SEC”) matter, a congressional inquiry is inherently political and frequently public. It proceeds through letters, document demands, subpoenas, transcribed interviews, hearings, and media attention. There is no judge to referee the scope of a subpoena and no settlement that ends the inquiry. Strategies that work well before DOJ or the SEC can backfire when the other side measures success in headlines.

• Grand jury secrecy protections do not apply, and committees have historically taken the position that they are not bound to recognize common law privileges, including the attorney-client privilege and work product protection, in the same manner as courts. Recent decisions and executive branch guidance have added complexity to privilege questions, including the D.C. Circuit’s 2026 decision in the Navarro contempt appeal and a 2026 Office of Legal Counsel opinion addressing executive privilege and communications with persons outside the government.² Privilege decisions carry real consequences, particularly for companies whose files include communications with Administration officials.

• Staff-led transcribed interviews are nominally voluntary, but these sessions are recorded, and inaccurate testimony can expose a witness to liability under federal false-statement laws.

• Noncompliance with a subpoena carries the risk of contempt proceedings or referral to the DOJ.

3. Companies may find themselves under simultaneous and competing pressures. Congressional activity rarely stays squarely in its own lane. Organizations may face concurrent inquiries from congressional committees, federal agencies, and state attorneys general, each with distinct objectives and each potentially pulling in a different direction. Information produced in one forum may surface in another, and positions taken before one audience will be evaluated by all. Without a single, coordinated strategy, positions can diverge and actions in one forum can create exposure in another.

4. Early engagement of experienced counsel shapes the entire inquiry. The first letter from a committee sets the tone for everything that follows. Decisions made at the outset regarding preservation, scoping, and initial contact with committee staff frequently determine the trajectory of an investigation, and missteps are difficult to undo. Prompt, credible engagement can narrow requests, establish workable timelines, and reduce the likelihood of public escalation. The initial time period after a letter arrives are critical, so companies should retain experienced congressional investigations counsel immediately.

5. There is no standard playbook. In some matters, early cooperation is the most effective means of narrowing scope; in others, a principled challenge to jurisdiction or breadth is warranted; and in still others, a measured, low-profile response best serves a company or individual’s interest. Effective counsel must understand the client’s business and objectives, advocate zealously and credibly, and resist the impulse to be either reflexively adversarial or reflexively compliant.

6. Credibility on both sides of the aisle is a strategic asset. Majorities change, and today’s minority members and staff may lead tomorrow’s committees. Credibility with members and staff of both parties — as well as with regulators, the media, and the Administration — is critical. Counsel with established, bipartisan relationships are often able to resolve questions of scope, timing, and confidentiality before they become public disputes.

7. Preparation should begin now, and the rules will matter. Companies in sectors likely to attract scrutiny will find that their government relationships, sensitive communications, and public commitments are among the first places investigators look, and their executives may be called to testify. The procedural ground rules for the 120th Congress also merit attention. Subpoena authority differs significantly between the chambers and from one committee to the next. The House and Senate rules packages adopted in January, along with any new select committees or subcommittees, will shape how quickly and forcefully investigators can act.

How V&E Can Help

Vinson & Elkins has substantial experience representing high-profile individuals, universities, energy companies, technology companies, financial institutions, manufacturers, and a litany of others in congressional investigations, hearings, and related government inquiries. Our team includes lawyers with years of experience inside the beltway on Capitol Hill, at the Department of Justice, and across the executive branch. If your organization anticipates congressional scrutiny or has already received an inquiry, please contact the authors listed below to discuss next steps.

¹See Letter from Frank Pallone, Jr., Ranking Member, H. Comm. on Energy & Commerce, to Elon Musk, Founder & CEO, SpaceXAI (July 28, 2026); Press Release, H. Comm. on Energy & Commerce Democrats, Pallone Demands Answers from SpaceXAI About Its Data Center Threats to Tennessee & Mississippi Communities (July 29, 2026) (noting that Democratic Committee staff had met with companies over the preceding four months regarding their AI and data center strategies, energy consumption, environmental impacts, and commitments to local communities), available at https://pallone.house.gov/media/press-releases/pallone-demands-answers-spacexai-about-its-data-center-threats-tennessee

²See United States v. Navarro, 182 F.4th 1005 (D.C. Cir. 2026); Applicability of Executive Privilege to Presidential Communications with Private Advisers, 50 Op. O.L.C. __ (Aug. 10, 2026), available at https://www.justice.gov/olc/media/1457271/dl

This information is provided by Vinson & Elkins LLP for educational and informational purposes only and is not intended, nor should it be construed, as legal advice.