ExxonMobil has been the prime target of activists and politicians angered by the oil industry’s efforts to block action on climate change. Now, newly disclosed documents confirm that the oil company’s reputational woes have extended into the industry itself and threatened to derail Exxon’s biggest climate proposal to date.

Last year, Exxon struggled to gain support from its peers when it proposed a cross-industry effort to build a carbon capture and storage hub in Houston, according to documents released by the House Committee on Oversight and Reform, which has been investigating the oil industry. Top executives at Shell, in particular, worried that joining with Exxon would present an “unacceptable risk” to the European oil major’s reputation.