MARYVILLE, Tenn. – Hotaru Ferschke just wants to raise her 8-month-old son in his grandparents' Tennessee home, surrounded by photos and memories of the father he'll never meet: a Marine who died in combat a month after marrying her from thousands of miles away. Sgt. Michael Ferschke was killed in Iraq in 2008, leaving his widow and infant son, both Japanese citizens, in immigration limbo: A 1950s legal standard meant to curb marriage fraud means U.S. authorities do not recognize the marriage, even though the military does. Ferschke and his bride had been together in Japan for more than a...