Going all the way back to 1876 in a recently posted news article. Nice. Good I am glad you brought that up. I hope they use this to open the flood gates.

“On March 2, 1876, "like a bolt of lightning from a cloudless sky," came the news that Secretary of War William Belknap had resigned that morning, and had been impeached that afternoon for accepting bribes.” https://scholarworks.wmich.edu/cgi/viewcontent.cgi?article=2395&context=masters_theses

NOT a President, not finishing a term, resigning due to a dubias event.

Does this then set precedent for Joe Biden to be Impeached umpteen times?
“In 2016, Ukraine’s top prosecutor, Viktor Shokin, had an active and ongoing investigation into Burisma and its owner, Mykola Zlochevsky.10 At the time, Archer and Hunter Biden continued to serve on Burisma’s board of directors. According to news reports, then-Vice President Biden “threatened to withhold $1 billion in United States loan guarantees if Ukraine’s leaders did not dismiss [Shokin].”11 After that threat, Ukraine’s Parliament fired Shokin.”
Federal regulation prohibits federal government employees from “us[ing] [] public office for [] private gain ... or for the private gain of ... relatives.”15 This regulation also seek “[t]o ensure that the performance of [] official duties does not give rise to an appearance of the use of public office for private gain or of giving preferential treatment[.]”16 This regulation, however, does not apply to the president or vice president.17
Other federal regulations require only the “consideration” of an appearance of a conflict of interest. “Where an employee ... knows that a person with whom he has a covered relationship [e.g.,] is or represents a party to [a particular matter involving specific parties], and where the employee determines that the circumstances would cause a reasonable person with knowledge of the relevant facts to question his impartiality on the matter, the employee should not participate in the matter unless he has informed [a designated superior] and received authorization[.]”18”

https://www.hsgac.senate.gov/imo/media/doc/HSGAC_Finance_Report_FINAL.pdf