US HB2556

Requires the Secretaries of Energy, Interior, and State to jointly submit a report within 18 months identifying and assessing transboundary hydrocarbon reservoirs shared with neighboring countries including Canada, Mexico, Cuba, the Bahamas, and Russia

Mandates comprehensive offshore energy resource inventories at least every 5 years covering the Atlantic, Pacific, Alaska, Gulf of America, and U.S. territories, including analysis of how undiscovered resources could affect U.S. global energy competitiveness and domestic employment

Requires periodic assessment of Interior Department resource estimation models in consultation with the National Petroleum Council, Society of Petroleum Engineers, and U.S. Association for Energy Economics, with the first assessment within 1 year and subsequent reviews every 10 years

Directs use of advanced technologies including quantum computing, artificial intelligence, and geographic information systems to improve accuracy of offshore resource estimates and reduce uncertainty ranges

Requires comparative analysis of offshore oil and gas practices for major producing countries within 1 year, including data on lease offerings, production volumes, fiscal terms, and discovered versus undiscovered resource assessments