The problem with whistleblowing is that whatever was going on wrongly,
   it was almost certainly happening in order to make somebody powerful
   actually be far more powerful, whether directly or indirectly.  There's
   likely huge incentivisation to pull far more strings to suppress
   problems.  Like the killer who becomes a serial killer because it's all
   they have left, except it's your head of state.
   Here's another quote:
   However, according to a report that the Committee on Homeland Security
   and Governmental Affairs submitted to accompany S. 743, "the federal
   whistleblowers have seen their protections diminish in recent years,
   largely as a result of a series of decisions by the United States Court
   of Appeals for the Federal Circuit, which has exclusive jurisdiction
   over many cases brought under the Whistleblower Protection Act (WPA).
   Specifically, the Federal Circuit has accorded a narrow definition to
   the type of disclosure that qualifies for whistleblower protection.
   Additionally, the lack of remedies under current law for most
   whistleblowers in the intelligence community and for whistleblowers who
   face retaliation in the form of withdrawal of the employee's security
   clearance leaves unprotected those who are in a position to disclose
   wrongdoing that directly affects our national security."^[1][8]

References

   1. https://en.m.wikipedia.org/wiki/Whistleblower_Protection_Act#cite_note-8