Rep. Samuel Stratton, the dean of New York's congressional delegation and a 30-year veteran of the House of Representatives, won't seek a 16th term in office, his son-in-law said Monday. Stratton, a Democrat, has been reportedly under scrutiny in an investigation of alleged fraud in Pentagon procurement but the family spokesman, Roger Mott, said the 71-year-old congressman was retiring because of illness. "It's health, health, health," Mott, a former Stratton chief of staff, told reporters at the congressman's office in Albany. "The Pentagon thing was a gnat on an elephant's rear end." Stratton, a longtime asthma sufferer, has been experiencing additional fatigue recently.