Resolves to the next state to be admitted to the US; the most recent states to join were Alaska and Hawaii in 1959. Answers do not need to have the same name the state joins under (e.g. "Washington D.C." counts, even if it joins as "Jefferson"). States changing their name or gaining or losing territory (e.g. if some counties from Oregon join Idaho) do not count. I will extend the close date if necessary.