To oppose the permitting of deep seabed mining and exploration for deep seabed mining, and for other purposes.

HR 663 directs the U.S. government to oppose deep seabed mining permits and exploration internationally. It requires the President to instruct U.S. representatives in global organizations to advocate for a moratorium on such mining and to block financial support for it. The bill mandates that no U.S. support for seabed mining can resume until the International Seabed Authority establishes binding regulations proven to protect marine ecosystems through scientific consensus. This affects U.S. policy in international ocean governance forums, requiring certification that regulations are scientifically sound and environmentally protective before any U.S. approval. The bill focuses on procedural requirements for international regulatory frameworks, not domestic mining activities.