New guidance released earlier this month by the Army Corps of Engineers is raising more questions than it answers when it comes to projects that potentially impact federally protected waters of the United States. POLITICO’S Alex Guillén breaks down the latest guidance and how it could impact hundreds of projects across the building, mining and agricultural sectors.    Kelsey Tamborrino is a reporter covering clean energy and the host of POLITICO Energy podcast.  Alex Guillén is an energy reporter for POLITICO Pro.  Nirmal Mulaikal is a POLITICO audio host-producer.  Carlos Prieto is an audio producer for POLITICO.  Raghu Manavalan is a senior editor for POLITICO audio. Jenny Ament is the interim executive producer of POLITICO’s audio department. Learn more about your ad choices. Visit megaphone.fm/adchoices