On October 28, 2008, the rogue nation of Dystopia launches an amphibious assault on the northern coast of California. Achieving total surprise, Dystopian marines quickly push inland, and within a week (November 4, 2008) have conquered a large chunk of territory - territory that, by pure coincidence, are the exact geographical boundaries of California’s First Congressional District.
Despite repeated efforts of the US armed forces (vastly overextended abroad), Dystopian troops are still in control of the District on January 3, 2009 - when the new Congress is sworn in.
Who, if anybody, is sworn in to represent the California 1st in January 2009?
I put this in Great Debates because I am not sure if there is a definitive answer. The Constitution does not appear to have a clause on point, and I don’t think history serves to resolve the question - it doesn’t appear that, in the War of 1812, the British were in complete control of a Congressional district during either election that occurred in that war, and the Civil War is an inapt comparison.