ATLANTA - When the 300 millionth American is born or immigrates this week, Bobby Woo will welcome a new milestone that surpasses an unofficial distinction he has held for nearly 39 years. When Woo was born in 1967, Life magazine heralded him as the 200 millionth American. Growing up, he didn't understand the special distinction until his parents told him it was because he represented "the average American." While the Atlanta attorney, born of a Chinese immigrant, considers it an honor, he now laughs at the whole concept of average for this diverse nation. "There's no typical American," he said...