Updated at 1:40 E.T.
In one of his most sweeping environmental proposals so far, President Trump says he wants to streamline an "outrageously slow and burdensome federal approval process" that can delay major infrastructure projects for years.
Supporters from the fossil fuel, construction, ranching and other industries welcome the move, which they've long sought. Environmental groups warn it would sideline the climate impacts of highways, pipelines and other projects, and they promise a legal challenge.