The move, first reported Thursday, elevates Kaine to a leadership position on budget matters as Congress prepares for debates over federal spending, the deficit and tax policy. The Budget Committee is responsible for drafting the annual budget resolution and overseeing the congressional budget process, giving its chair significant influence over the terms of those debates.

Kaine, a former Virginia governor and one-time vice presidential nominee, has served in the Senate since 2013. He has been a member of the Budget Committee and has focused on issues including military families, veterans and fiscal responsibility. His new role will give him a larger platform to shape Democratic messaging on the economy and spending priorities.

The chairmanship comes as Democrats look to sharpen their contrast with Republicans on fiscal policy ahead of the 2028 elections. The Budget Committee will be central to any negotiations over government funding, the debt limit and potential tax legislation.

Kaine's office did not immediately respond to a request for comment. The committee's current chair and the exact timing of the transition were not immediately clear.

The appointment is likely to be welcomed by Virginia officials, who see a senior committee chairmanship as a boost for the state's influence in Washington. Kaine has been a vocal advocate for federal workers and defense installations in the commonwealth, both of which are affected by budget decisions.

Senate Democrats are expected to formally ratify committee assignments in the coming weeks.