This bill amends the Marine Mammal Protection Act of 1972 to make it easier for industries to obtain permission to harm marine mammals. The legislation changes the legal standard from activities that "have the potential to" injure or disturb marine mammals to those that actually "injure" or "disturb" them, creating a higher threshold for protection. It removes requirements that activities use the "least practicable adverse impact" approach and instead allows the Secretary to impose only conditions deemed "appropriate, practicable and economically feasible," which cannot alter the basic design, location, scope, duration, or timing of industrial activities. The bill also adds a definition of "negligible impact" and creates a new provision requiring that all decisions about marine mammal protection be based "solely upon the objective application" of scientific data without "precautionary factors or assumptions." Overall, the bill shifts the balance away from marine mammal protection toward accommodating industrial activities by lowering environmental protections and limiting how regulators can mitigate harms to these animals.