Squeezed between glacier-packed mountains and Alaska's Prince William Sound, the cruise-ship stop of Whittier is isolated enough that it's reachable by just a single road, through a long, one-lane tunnel that vehicles share with trains. In what experts describe as an unprecedented case, Alaska prosecutors are pursuing felony charges against 11 residents of Whittier, most of them related to one another, saying they falsely claimed U.S. citizenship when registering or trying to vote. The defendants were all born in American Samoa, an island cluster in the South Pacific roughly halfway between Hawaii and New Zealand.