A key member of the Congressional Oversight Committee is questioning why the FBI Deputy Director whose wife received up to $675,000 in political donations from a prominent Clinton operative is still heading up the investigation into Hillary’s email scandal.

At the end of October, news broke that state senate candidate Jill McCabe was the recipient of nearly $500,000 in donations from a Democrat PAC run by Virginia Governor Terry McAuliffe, a long-time close associate of Bill and Hillary Clinton and one-time chairman of the Democratic National Committee. The candidate, who ultimately lost her bid, also received another $200,000 from the state Democratic Party, over which McAuliffe has heavy influence.

First-time candidate for office, Jill McCabe is the wife of FBI Deputy Director Andrew McCabe, the man heading up one of the Bureau’s investigations into the illicit email server Hillary Clinton hid in her home for use when she was President Obama’s Secretary of State.

Oversight Committee Chairman Jason Chaffetz (R-UT), has sent a letter to Director McCabe demanding that he reply to questions of the propriety of his heading an investigation into the very group of people who gave so much to his wife’s losing campaign for state office.

“It seems like an obscene amount of money for a losing race,” Chaffetz told the Washington Post.

The committee chair is asking the FBI deputy chief to supply documents detailing his wife’s financial dealings with her campaign.

“There are outstanding questions… regarding a possible conflict of interest into this case,” Chaffetz’ letter reads. The chairman also asked McCabe to reveal “when you first became aware the State Department was pressuring the FBI to reverse its decision regarding the classification of one of Secretary Clinton’s emails,” and “when you first became aware the FBI had opened an investigation into Secretary Clinton’s email server.”

Chaffetz seeks to learn if there is any possible conflict between when McCabe’s wife received the hundreds of thousands in political donations and when McCabe was told of the pending FBI investigation into Hillary’s email scandal.

Follow Warner Todd Huston on Twitter @warnerthuston or email the author at igcolonel@hotmail.com.