The Democrats have secured majorities in both the House and Senate in the midterm elections, ending Republican control of Congress for the final two years of President Trump’s second term. Under the 20th Amendment, the terms of the newly elected members begin on January 3, 2027, when the 120th Congress convenes and members are sworn in, leaving the outgoing 119th Congress a brief window to secure key appointments and funding commitments before the Democrats gain full control.
The White House has prepared to govern without Congress using existing constitutional powers and powers delegated to the executive by statute, but will be substantially constrained by congressional control over appointments, lawmaking, and government funding.
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Legislation and Appointments.
With majorities in both chambers, the Democrats can set the legislative agenda and block Republican bills. However, Republicans will likely be able to block most Democrat bills in the Senate, where Democrats will struggle to achieve the 60 votes needed to overcome a filibuster despite their midterm gains.
Budget reconciliation measures that address taxes and spending operate under different rules than most legislation, and can pass the Senate with a simple majority, but their scope is limited. Notably, any bill that clears both chambers can still be vetoed by the President, and Congress cannot override such vetoes without the support of two-thirds of each chamber, a threshold that is unlikely to be met without substantial Republican support.
The Senate must confirm presidential nominees for Supreme Court justices, lower court federal judges, Cabinet positions, and many other important offices. A Democrat Senate majority will make it substantially harder, if not impossible, for the Trump administration to secure the confirmation of contested picks. President Trump will retain the power to remove executive branch officials he appointed, so Cabinet changes can still occur without Senate involvement, but filling vacancies permanently will be much more difficult.
Investigations, Subpoenas, and Impeachment.
Control of the House grants Democrats the ability to issue subpoenas for documents and testimony by administration officials. The party leadership has indicated it will make extensive use of these powers to harass the Trump administration over various executive actions, alleged conflicts involving family or business interests, and the conduct of agencies such as the Department of Justice and the FBI.
To impeach President Trump and other officials, such as Secretary of War Pete Hegseth and Health and Human Services Secretary Robert F. Kennedy Jr., only a simple majority is required in the House. A two-thirds vote in the Senate is required for conviction and removal, which the Democrats are unlikely to secure, but impeachment and Senate trial processes could still consume a significant amount of the administration’s bandwidth.
Immigration Enforcement.
ICE and other immigration enforcement agencies operate under the Immigration and Nationality Act. The administration can continue to direct enforcement priorities and tighten visa processing for students, temporary workers, and other groups, and protections previously extended to immigrant groups by executive action can be narrowed or ended, albeit within the bounds of statute and subject to judicial review.
However, future funding for personnel and detention capacity could prove to be a powerful lever for the Democrats, who will be able to restrict or condition future appropriations once they control the relevant congressional committees and the power of the purse.
Tariffs and Trade Measures.
Delegated authority under statutes such as Section 232 of the Trade Expansion Act of 1962 and Section 301 of the Trade Act of 1974 permits the President to impose or adjust tariffs on goods linked to national security concerns or unfair trade practices. Critical minerals, certain industrial products, and items tied to energy or technology supply chains have been addressed through these channels without fresh authorizing legislation.
Significantly, any attempt by the new Congress to repeal or sharply limit these powers would require legislation, which President Trump could veto. A two-thirds majority in both chambers is needed to override a presidential veto, which will prove highly challenging for the Democrats even after their midterm gains.
Foreign Policy Continuity.
As Commander in Chief and chief diplomat under Article II of the Constitution, the President retains latitude to conduct military operations and negotiations and to adjust diplomatic relations on issues involving Ukraine, Russia, China, and Iran. These actions do not require new congressional authorization, though they remain subject to funding constraints.
The Coming Confrontation.
Congress having exclusive authority over appropriations means the Democrats will be able to interfere in areas where the executive has fairly broad freedom of action, such as immigration enforcement and operations overseas, by withholding or conditioning funding for specific activities.
The Trump administration can attempt to reprogram existing funds, which will likely lead to the courts adjudicating disputes between the White House and Congress over statutory authority, procedural compliance, and the scope of executive discretion in a series of lawfare battles.
The period between the midterm elections and the January 3 swearing-in leaves limited time for the current GOP-controlled Congress to address must-pass items such as government funding before existing authorities expire. Once the new majorities take over, the result is likely to be an extended contest between unilateral executive tools and congressional control over legislation, confirmations, investigations, and spending. Both sides possess significant checks on each other, although deadlocks are likely to be more harmful to the White House than to the Democrats by hindering the administration’s ability to govern effectively.
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