On the banks of the Yukon River, after arriving by canoe only a few miles from the Canadian border, I shared some salmon with Karma Ulvi, the chief of the Native Village of Eagle in Alaska. But the fish we ate wasn’t caught locally: A plane had delivered the salmon from Bristol Bay, in the southwest corner of the state, over 1,000 miles away. For the Native tribes that have lived along the Yukon for millennia, importing is the only option. “We haven’t been able to fish for seven years,” said Ulvi.