U.S. Democratic presidential candidate Hillary Clinton speaks during a campaign stop in Long Beach, California, United States June 6, 2016. REUTERS/Mike Blake

U.S. Democratic presidential candidate Hillary Clinton speaks during a campaign stop in Long Beach, California, United States June 6, 2016. REUTERS/Mike Blake

U.S. Democratic presidential candidate Hillary Clinton speaks during a campaign stop in Long Beach, California, United States June 6, 2016. REUTERS/Mike Blake

June 7, 2016 1:07 AM (UTC+8)