Possible Clues:

• Unfortunately, a couple from Kansas are in detached state
• Separate state in question occupying a large area
• US state unfortunately okay without borders
• State makes a request in US city
• Iditarod site
• Where the Exxon Valdez ran aground
• State on the Chukchi Sea
• British Columbia neighbor
• Russian castoff
• It was purchased in 1867