The House Oversight and Government Reform Subcommittee on Energy, Health Care, and Entitlements held a hearing on July 18 to examine the updated social cost of carbon, and witness Office of Information and Regulatory Affairs Administrator Howard Shelanski said the increase in the cost was linked to the best available science. He said the three underlying models that determined the figure were updated by the model makers, thus leading officials to up the social cost of carbon to $38 per metric ton for 2015. The previous day, Representative Joe Barton (R-TX) announced he was considering introducing legislation or requesting a hearing on the change.