Those "14,000 jobs that already exist" are seasonal jobs lasting about two months out of the year. I know; I'm one of the commercial fishermen who fish Bristol Bay. I have a vested interest in a healthy fishery. 
Jobs that might be created if a mine is developed would greatly benefit the thousands of people who live in the region year around. Unlike people like me who show up for a couple of months and then leave.
The Pebble Mine project deserves to be given the opportunity to demonstrate whether or not they can develop a mine that is also environmentally compatible with the area. To date, they have not been granted that opportunity.