History trailing Japanese leader on his upcoming US visit

History will be trailing Japanese Prime Minister Shinzo Abe during his visit to the United States.

Abe intends to promote a free trade pact and stronger defense ties as his government loosens the shackles of Japan's pacifist constitution 70 years after the end of World War II.

But while Japan wants to look to the future, it cannot seem to shake off its past.

Korean-Americans who have championed the cause of former sex slaves of the imperial Japanese m