A Treasury Department staffer resigned after his mom agreed to plead guilty to paying bribes so he could graduate from Georgetown University in the nationwide college admissions scandal, according to a report.

James Littlefair, an advance staffer who worked for Treasury Secretary Steven Mnuchin, stepped down earlier this month, Politico reported.

Prosecutors announced Monday that his mother, Karen Littlefair, will plead guilty to charges she paid crooked college counselor William “Rick” Singer $9,000 to have a proxy take online classes for her son at Georgetown and Arizona State University.

Her son graduated from Georgetown in May 2018, “based in part on the academic credits fraudulently earned … on his behalf,” prosecutors said.

James Littlefair’s LinkedIn profile shows he attended Georgetown from 2012 to 2016. He joined the Treasury Department as an advance representative in 2017.

He has not been charged with a crime and declined to comment when reached by the outlet.

His father, Andrew J. Littlefair, is the president and CEO of natural gas company Clean Energy Fuels Corp and sits on the board of trustees of the Ronald Reagan Presidential Foundation and Institute. He hasn’t been charged.

A 2016 family holiday photo posted to Twitter by Andrew shows the family posing in front of what appears to be a university quad, with James standing in the middle wearing a grey sweatshirt.

James worked as part of the national advance team for President Trump’s 2016 campaign before joining the Presidential Inaugural Committee as an event coordinator, Politico reported.

He also previously worked as an intern in the office of former New Jersey Gov. Chris Christie.

An unnamed friend told the outlet that James is a “very proud Georgetown graduate, very involved in Georgetown activities, whether it’s basketball games or other alumni stuff.”

A former Treasury official said he was “a very well liked and respected member of the team at Treasury.”

A Georgetown spokesperson said the university’s honor council “will investigate and adjudicate the case and may recommend sanctions up to and including the revocation of the student’s degree.”

Dozens of other parents — including actresses Felicity Huffman and Lori Loughlin — have been arrested in the far-reaching scandal for allegedly paying Singer to boost their kids’ test scores or athletic prowess so they could get into top colleges.

But Karen Littlefair is the first busted for helping her offspring cheat while they were in school.

Federal prosecutors said they will recommend a sentence of four months’ jail, a year of supervised release, a $9,500 fine and restitution in her case. A plea hearing has yet to be scheduled.