Enbridge Inc (NYSE: ENB) is a Canadian oil and gas midstream giant that sports an impressive 4.6% yield — well more than twice what the broader market is offering investors today. It has big plans, too, calling for compound annualized dividend growth of as much as 12% over the next few years. But there’s a fly in the ointment that you’ll want to know about before you step in here, which is why the experts are watching how the company’s leverage and dividend growth play against each other.