House Democrats furious over reports of Donald Trump’s apparent offer to oil executives over a Mar-a-Lago dinner last month—that if they raised $1 billion for his campaign, he would slash environmental regulation once back in office—have launched an investigation. First reported by The Washington Post, sources said Trump’s dinner saw the former president offer a “deal” if the $1 billion fundraising goal was met. A letter by Democrats on the House Oversight Committee on Monday night was sent to nine executives, it confirmed in a Tuesday statement. CEOs at Cheniere Energy, Chesapeake Energy, Chevron, Continental Resources, EQT Corporation, ExxonMobil, Occidental Petroleum and Venture Global, all received one. Trump’s unvarnished quid pro quo offer is especially troubling evidence in light of recent accounts that the ‘U.S.