How many times has Hillary Clinton been investigated?

Hillary Clinton has been investigated multiple times throughout her career, notably during her tenure as Secretary of State concerning her use of a private email server. The FBI conducted a high-profile investigation into the matter, concluding in 2016 with no charges. Additionally, she faced inquiries related to the 2012 Benghazi attack and various other controversies. Overall, she has been the subject of numerous investigations, reflecting her prominent role in U.S. politics.