Subject to section 5614 of this title and this section, nothing in this subchapter or an Indian trust asset management plan approved under section 5613 of this title shall independently diminish, increase, create, or otherwise affect the liability of the United States or an Indian tribe participating in the project for any loss resulting from the management of an Indian trust asset under an Indian trust asset management plan.

The United States shall not be liable to any party (including any Indian tribe) for any term of, or any loss resulting from the terms of, an Indian trust asset management plan that provides for management of a trust asset at a less-stringent standard than the Secretary would otherwise require or adhere to in absence of an Indian trust asset management plan.

Subsection (b) applies to losses resulting from a transaction or activity described in that subsection even if the Indian trust asset management plan is terminated under section 5613(d) of this title or rescinded under section 5614(h) of this title.

An Indian tribe may submit to the Secretary tribal regulations described in section 5614(b) of this title governing forest land management activities for review and approval under this subchapter if the Indian tribe does not submit or intend to submit an Indian trust asset management plan.

Nothing in this subchapter enhances, diminishes, or otherwise affects the trust responsibility of the United States to Indian tribes or individual Indians.