Complex sentence: The current system for enforcing intelligence community whistleblowers rights against reprisal is entirely internal to the intelligence agencies, though the Congressional intelligence committees can intervene to help ensure that the whistleblower is protected, and an appeals mechanism was added in recent years.
Split into simpler sentences: The current system for enforcing intelligence community whistleblowers rights against reprisal is entirely internal. Although the Congressional intelligence committees can intervene to help ensure that the whistleblower is protected, and an appeals mechanism was added in recent years.