Donald Trump signs orders advancing construction of Keystone, Dakota pipelines Jennifer Jacobs, Jennifer A. Dlouhy and Meenal Vamburkar, Bloomberg News | January 24, 2017 1:57 PM ET More from Bloomberg News President Donald Trump took steps to advance construction of the Keystone XL and Dakota Access pipelines, marking the start of an era with fewer constraints on the oil industry to the chagrin of environmentalists who have bitterly fought the projects. The moves, among Trump’s first actions since taking office, are a major departure from the Obama administration, which rejected TransCanada Corp.’s Keystone proposal in 2015 and has kept Dakota Access blocked since September. Environmentalists, concerned about climate change and damage to waters, land and Native-American cultural sites, now face an executive branch that’s less sympathetic to their efforts. For the oil industry, it heralds more freedom to expand infrastructure and ease transportation bottlene...