One of President Joe Biden's foremost aides will soon depart from the White House, the Washington Examiner reports. 

The senior aide is Louisa Terrell. She is currently the White House director of legislative affairs.

But, Terrell has been working for Biden for decades, going back to when Biden was a U.S. Senator from Delaware, who was a member of the Senate Judiciary Committee. This makes Terrell one of Biden's longest-serving aides. Terrell also once went to school with Biden's late son, Beau Biden.

CNN describes Terrell as having "an outsized, behind-the-scenes influence."

"I have relied on Louisa"

Biden put out a statement on Friday confirming Terrell's departure from the White House.

Biden said:

For years — as a Senator, as Vice President, as President, and every moment in between — I have relied on Louisa for her wise counsel and her skill. I have relied upon her to reflect my values. And, I have relied upon her to deliver for the American people. Every step of the way, that’s exactly what she has done.

It is being reported that Terrell, among other things, helped to get Congress to pass the so-called Inflation Reduction Act and that she helped to recently make a deal with House Speaker Kevin McCarthy (R-CA) in order to avoid a government default.

Biden went on to highlight Terrell's other accomplishments.

He said:

Louisa’s steady hand and perseverance have consistently helped get key priorities over the finish line. Her work to secure the confirmation of Justice Ketanji Brown Jackson to the Supreme Court, along with a historic number of diverse judges and appointees across the United States Government, has significantly furthered our work to build an Administration and judicial benches at every level that look more like America.

Why now?

The big question, of course, is why is Terrell leaving Biden's side now. After all, his administration is not over, and he is running for reelection in 2024.

As is often the case with such departures, we do not have the answer to this question.

In recent months, we have seen other high-profile departures from the Biden administration, where those leaving were simply leaving to join Biden's reelection campaign. Julie Chavez Rodriguez is one such example.

But, at the time of this writing, there is no indication that this is Terrell's plan. Terrell has not released a statement on her departure.

Terrell is scheduled to officially leave the Biden administration by the end of July.