Snowden: Long prison term for me would erode democracy in US

NEW YORK - National Security Agency leaker Edward Snowden says it would "chill speech" and "erode the quality of our democracy" if he serves a long prison term in the U.S.Snowden spoke by video at a New York news conference Wednesday. Advocates, including Human Rights Watch and Amnesty International, are launching a public campaign to persuade President Barack Obama to pardon him.Speaking from Moscow where he is in exile, Snowden said he performed a public service by giving thousands of classifi