BILLINGS, Mont. (AP) — The U.S. energy boom and strong backing from President Donald Trump propelled a major expansion of the nation’s sprawling oil and gas pipeline network in the past decade.

But mounting political pressure and legal setbacks have put its future growth in doubt — even as the pandemic saps demand for fuel. Two major oil pipelines in the Midwest suffered courtroom blows this week and utilities in the Southeast canceled plans for an $8 billion gas transmission line.

Industry executives acknowledge their opponents have found some success in the courts, but say demand will rebound and pipelines are the safest way to move oil.