Keys town fights border station Locals fear loss of their identity BY JENNIFER BABSON jbabson@herald.com The tiniest city in the Florida Keys -- population 186 in the high season -- is taking on U.S. Attorney General John Ashcroft in a battle that locals say is intended to preserve their patch of paradise. Angry residents of Layton filed suit after the U.S. Border Patrol announced plans to open a new station, including an interim migrant processing center, in the mile-long municipality between Islamorada and Marathon. 'The mood in Layton is, `Hey, whatever it takes,' '' said Hal Halenza, 72, a city...