Alexander Smirnov — the 43-year-old confidential FBI informant recently indicted for lying about President Joe Biden and his son, Hunter — had a long history of behavior jeopardizing his credibility long before he was criminally charged, according to several FBI officials. Several ex-FBI employees with experience handling confidential informants recently told the Washington Post that Smirnov repeatedly violated protocol throughout his time as an FBI source by using his informant work as leverage for his personal benefit. Dmitry Fomichev, who is a tech investor, decided to loan Smirnov money be…