According to the Virginia Public Access Project, the two major donations that Jill McCabe received, totaling almost $700,000, came from a political action committee of Virginia Governor Terry McAuliffe, a Democrat and Clinton friend, and from the Virginia Democratic Party.
But that didn't stop Trump from firing off several tweets on Saturday and Sunday accusing McCabe - seemingly without evidence - of using his "FBI official email account" to promote the Clinton campaign.
The letters come as Mueller's team is facing heightened scrutiny in recent weeks following reports that two FBI officials who would later be assigned to the special counsel's investigation called Trump an "idiot" and "loathsome human" in a series of text messages past year.
Allies of the president have seized on the messages and other details about Mueller's team to allege it is biased against Trump. He quickly climbed the administrative ladder and ended up holding senior positions at the counterterrorism division and the national security branch before being appointed deputy director on January 29, 2016.
The president's harsh words for McCabe and McCabe's wife, Jill, prompted former Central Intelligence Agency director John Brennan to state that Trump is afraid of the Federal Bureau of Investigation.
McCabe has come under fire from Republicans over the past year because of the bureau's investigation into the Clinton email issue as well as the probe into possible collusion between Trump's 2016 presidential campaign and Russian Federation.
Trump also pointed out that McCabe may be retiring soon, as The Washington Post reported Saturday. Mr. McCabe has also been deeply involved in the F.B.I.'s investigation into Russia's interference in the 2016 election and the potential involvement of the Trump campaign.
For this holiday, Donald Trump may be spreading anything but Christmas cheer for FBI Acting Director Andrew McCabe.
"Normally, someone being investigated for obstruction of justice who intimidates and threatens three key witnesses against him (here Comey, McCabe and Baker) risks additional witness tampering charges", Eisen wrote. For obvious reasons, Trump has been the most invested in pushing the narrative that the probe into whether he colluded with Russian Federation to sway the election is a "witch hunt" and a "scam".