Democratic Congress: $2.9 Trillion Selloff, Gavels and Gridlock

The AI-led selloff after the Nov. 3 midterms erased an estimated $2.9 trillion in market value, and Democrats will hold both chambers of Congress when the 120th Congress convenes on Jan. 3. Wall Street spent Monday arguing the rout was overdone. Morgan Stanley and UBS both told clients extreme regulation of data-center development is unlikely to materialize, Reuters reported.

The arithmetic limits what a Democratic majority can do. Democrats hold at least 54 Senate seats, short of the 60 needed to break a filibuster. Overriding a presidential veto requires two-thirds of both chambers, and President Trump has rejected mandatory AI rules. The result: investigations first, legislation later, mostly attached to must-pass annual bills. Ed Mills, Washington policy analyst at Raymond James, said "the probability of legislation is much higher than people anticipate." Democrats plan a first-100-hours vote to curb Trump's tariffs that they cannot pass over a veto.

One caveat governs everything below. Committee chairs are expected, not confirmed. Democratic caucuses set assignments in the coming weeks.

Who takes the gavels that matter for chips and AI?

• Senate Banking: Elizabeth Warren, expected. Crypto, bank charters, financial regulators.
• Senate Commerce: Maria Cantwell, leading candidate. AI safety rules, FCC, telecom.
• Senate Foreign Relations: Chris Coons, reported incoming chair. China, chip diplomacy, the Nvidia probe.
• Senate Finance: Ron Wyden, leading candidate. Tariffs, chip and energy tax credits.
• Senate Agriculture: Sherrod Brown, likely. CFTC oversight, crypto market structure.
• House Financial Services: Maxine Waters, leading contender; Sean Casten is challenging.
• House Energy and Commerce: Frank Pallone, presumptive. Big Tech, AI, privacy, power.
• House Science: Zoe Lofgren, seeking the post.

What happens to crypto?

Warren would gain staff and subpoena power at Banking. She has long accused crypto companies of fleecing consumers and is likely to examine the OCC's August approval of a bank charter for Trump-backed World Liberty Financial. "You're going to see a lot of investigations," said Brian Gardner of Stifel. Ron Hammond of Wintermute told Fortune that crypto firms seeking or holding bank charters have the most to lose.

Her near-term reach is limited. Trump-appointed heads of the SEC, CFTC and OCC keep their posts until his term ends. Brown won Ohio's Nov. 3 special election against Republican Jon Husted, after crypto PACs spent more than $63 million backing Husted. The Clarity Act, which would have made the CFTC crypto's main regulator, is stalled. TD Cowen's Jaret Seiberg said the new environment "may make it impossible to advance a version of Clarity that the crypto sector could back." Bitcoin and ether fell to their lowest since August on Sunday.

What about AI and data centers?

Cantwell released a six-point framework in October. It would have NIST write safety standards for frontier models, including open-source ones, with continuous testing and independent audits. Pallone said Democrats would "rein in Big Tech." Senate Democratic leader Chuck Schumer has prioritized protecting households from data-center-driven electricity bills. Freshman Will Lawrence, who flipped Michigan's 7th District, wants a federal data-center moratorium — a long shot.

The outgoing Senate held a cloture vote on Nov. 9 on a bipartisan permitting bill requiring data centers to pay the full cost of grid upgrades built to serve them. The bigger constraint sits in the states. Goldman Sachs estimates states likely to tighten data-center rules hold about 45% of planned U.S. capacity, Texas alone about a quarter, but expects pauses to be short-lived.

Chips, China and Nvidia

Coons said Congress will investigate Nvidia CEO Jensen Huang's ties to an alleged Chinese intelligence asset. Huang has acknowledged a relationship at the center of the reports, and Nvidia's board has opened an independent investigation. Warren co-sponsored bills with Republicans this year to restrict advanced chip shipments abroad. Wyden has a bill requiring congressional approval to limit presidential tariff power, and leaders of both parties support extending the 48D semiconductor investment tax credit. Rep. Josh Gottheimer, who helps shape Democrats' AI agenda, bought chip stocks after voting for a trading ban.

Musk under scrutiny

Elon Musk spent at least $474 million on the midterms, $224 million of it in Texas, according to a CNBC analysis. His America PAC spent nearly $87 million across 44 federal races; its candidates lost 29, with 12 uncalled as of Nov. 4. A Democratic Congress could investigate his federal contracts and his past leadership of DOGE. Musk warned in October: "those who pick fights with me should understand that I will find out who is really pulling the strings."

What does Wall Street expect?

Morgan Stanley said tougher rules would mostly push some data-center projects from 2028 into 2029, which "has the potential to elongate the AI capex cycle." It recommended buying the drop and stayed positive on Amazon, Meta and Alphabet. HSBC is adding equity exposure and calls Anthropic's IPO the key catalyst. Jefferies strategist Jane Gibbons called the Nov. 5 selloff "reactionary" rather than a fundamental reset. Brokerages point to Anthropic's IPO and Nvidia's quarterly results on Nov. 17 as likelier drivers of the AI trade than Washington.