Derek Tyre, President Trump's nominee to be deputy undersecretary for legislative affairs at the Treasury Department, told the Senate Finance Committee he will work with members of Congress to implement provisions of the recently enacted tax legislation and pledged an open-door approach to oversight and guidance.

Tyre, who previously served as senior tax counsel for the House Ways and Means Committee and as a senior policy adviser to House leadership, said Treasury’s Office of Tax Policy will handle technical guidance and that he would facilitate consultation between Treasury and Congress.

Specific oversight issues raised
Senators pressed Tyre on several implementation questions tied to the large tax package frequently referenced during the hearing (some speakers called it the “1 Big Beautiful Bill”):

- Begin-construction guidance for renewable energy credits: Sen. Chuck Grassley asked Tyre to commit that Treasury would interpret the statute’s phrase “begin construction” consistently with longstanding Treasury guidance. Tyre said the office of tax policy would work with members and staff and maintain an open-door engagement as guidance is developed.

- Clean fuel production credit (IRC §45Z): Senators sought timelines for formal guidance so the biofuels industry could proceed confidently. Tyre said timing is set by the office of tax policy and he would convey congressional concerns as a priority to Treasury colleagues.

- Community Development Financial Institutions (CDFI) Fund allocations: Tyre was asked to ensure timely allocation of FY25 CDFI funds that Congress appropriated. He said the matter falls outside his current portfolio but, if confirmed, he would work with senators and Treasury leadership on the issue.

Context and commitments
Multiple senators framed the law as pro‑growth and emphasized the need to avoid regulatory changes that would penalize projects that complied with preexisting guidance. Tyre promised to be responsive to committee questions and to help ensure Treasury communicates with members during implementation of statutory provisions.

What’s next
Committee members signaled they will follow up in writing on specific guidance and that they expect Treasury to consult closely with lawmakers during rule‑writing and guidance activities. Tyre’s nomination will move to a committee business meeting and, if reported, to the Senate floor for a confirmation vote.