Alaska’s great Bristol Bay, home to the nation’s greatest salmon fishery. will be off-limits to oil and gas leasing under a decision announced late Tuesday by President Obama. The resource of Bristol Bay is “too precious to be put out to the highest bidder,” said the President. The Obama order applies to the bay, and not to the multi-billion-dollar proposed Pebble Mine, which would be located between two of Bristol Bay’s most productive salmon spawning streams.