Democrats Win Congress, But Trump's Veto Pen Limits What Comes Next

On election night, as results came in showing Democrats winning control of both the House and the Senate, Hakeem Jeffries, the House Democratic leader, told supporters: "Today begins the great American comeback." The win was decisive, but the people celebrating it already knew the harder part starts in January, when the new Congress takes office.

Democrats ran on a set of promises: investigate corruption, bring down the cost of healthcare, groceries and petrol, and curtail the war with Iran. Winning Congress does not mean delivering on those promises. Republican President Donald Trump still holds the power to reject legislation, and the arithmetic of overriding him works against Democrats. A veto override needs two-thirds of both chambers, a margin Democrats will not reach on their own despite Tuesday's results.

Senator Chris Coons told the BBC that Democrats should not treat the result as a mandate, warning that the party remains "deeply unpopular." He called the outcome "overwhelmingly a rejection of Donald Trump, and his agenda and policies," but said the party must prove it can deliver answers on low wages and rising costs. His warning: "if we overreach, or if we fight too much internally, we could miss this moment."

The clearest lever Democrats gain is oversight. Congressman Robert Garcia of California is set to lead a powerful House oversight committee, and he posted a two-word message as results arrived: "Lawyer up." He listed possible targets, including Trump's family, "corporate corruption," alleged abuses by the Department of Homeland Security and Immigration and Customs Enforcement, and the government's handling of the Epstein files. Committees in both chambers have investigative powers. The Senate can also confirm or block cabinet and judicial nominees, so if a Supreme Court vacancy opened, Senate Democrats could block a nominee or push Trump toward a more moderate pick with bipartisan support.

The House can also impeach. Democrats did so twice in Trump's first term, and the Senate acquitted him both times. Conviction needs 67 votes, which likely remains out of reach. Democrats are debating whether to try at all, since the 2019 impeachment stoked partisan anger and let Trump cast himself as a victim of persecution, which later helped his run for a second term. Jeffries, who would almost certainly have to approve any effort, told CNN in August: "We haven't ruled anything in. And we haven't ruled anything out."

There is little reason to expect a smooth working relationship. Only 14% of registered voters approved of Congress in an October Gallup poll. Casey Burgat, a professor of legislative affairs at George Washington University, said that if legislating was hard under unified Republican control, "that will get much more complicated." Trump sent mixed signals on election night. He told the New York Times, "We'll probably work something out," then minutes later posted a picture of his red campaign hat with "VETO" across the front.

Jeffries has said reversing Republican cuts to Medicaid and extending Affordable Care Act tax credits are top priorities. Normally bipartisan topics, including affordability, regulation of the AI industry, military funding for Israel and the Iran war, could stall as Republicans, now the opposition heading toward the 2028 presidential cycle, may be reluctant to hand Democrats wins. Democrats may also split among themselves. Incoming senators such as Abdul El-Sayed of Michigan, and some incoming House members, said during the campaign they would vote to curtail aid to Israel, and could clash with party leadership.

Iran is a particular test. Bipartisan efforts to limit the war have passed one or both chambers, but Congress has not enforced them. In June both chambers passed a resolution to halt hostilities, which Trump could not veto but has essentially ignored. The White House says he has broad authority to continue. Scott Anderson of the Brookings Institution called Congress's power to force his hand an "open legal question," adding that Congress "can try to litigate this out, and force the courts to tell us." That possibility, along with the oversight investigations, is what to watch once the new Congress is sworn in.