Notice and hearing first, and the rules come off when the need goes
What the document says“The regulations described in subparagraph (A) shall be prescribed after notice and hearing required by section 103 of this title and shall be removed as soon as the Secretary determines that the need for their imposition has disappeared.”
Two duties on the same regulations. They are prescribed only after the notice and hearing required by section 103 of the Marine Mammal Protection Act, and they are removed as soon as the Secretary determines the need for them has disappeared. This Act does not set out what section 103 requires.
What the document actually says“The regulations described in subparagraph (A) shall be prescribed after notice and hearing required by section 103 of this title and shall be removed as soon as the Secretary determines that the need for their imposition has disappeared.”
The Secretary has to tell people first and hold a hearing. The rules have to come off once they are no longer needed.
A hearing is a meeting where people can speak. Another part of the older law sets out how that works. This part points at it. It does not say here what it asks for.
No action is recorded against this proposal. That is not evidence that none has been taken, and nobody has yet read it against the record. See what the tracker does not yet cover.