(a) Office of Inspector General of the Intelligence Community
There is within the Office of the Director of National Intelligence an Office of the Inspector General of the Intelligence Community.
(b) Purpose
The purpose of the Office of the Inspector General of the Intelligence Community isÂ
(1) to create an objective and effective office, appropriately accountable to Congress, to initiate and conduct independent investigations, inspections, audits, and reviews on programs and activities within the responsibility and authority of the Director of National Intelligence;
[...]
(c) Inspector General of the Intelligence Community
(1) There is an Inspector General of the Intelligence Community, who shall be the head of the Office of the Inspector General of the Intelligence Community, who shall be appointed by the President, by and with the advice and consent of the Senate.
[...]
(4) The Inspector General may be removed from office only by the President. The President shall communicate in writing to the congressional intelligence committees the reasons for the removal not later than 30 days prior to the effective date of such removal. Nothing in this paragraph shall be construed to prohibit a personnel action otherwise authorized by law, other than transfer or removal.
[...]
(f) Limitations on activities
(1) The Director of National Intelligence may prohibit the Inspector General of the Intelligence Community from initiating, carrying out, or completing any investigation, inspection, audit, or review if the Director determines that such prohibition is necessary to protect vital national security interests of the United States.
(2) Not later than seven days after the date on which the Director exercises the authority under paragraph (1), the Director shall submit to the congressional intelligence committees an appropriately classified statement of the reasons for the exercise of such authority.
(3) The Director shall advise the Inspector General at the time a statement under paragraph (2) is submitted, and, to the extent consistent with the protection of intelligence sources and methods, provide the Inspector General with a copy of such statement.
(4) The Inspector General may submit to the congressional intelligence committees any comments on the statement of which the Inspector General has notice under paragraph (3) that the Inspector General considers appropriate.
The IC IG was set up by Congress. While not all-powerful when it comes to investigations, they are independent, and if the President or DNI interferes with his or her investigation, they have to report to Congress on why they're doing so.
IG's aren't puppets.
FWIW.
Cheers,
Scott.