When Ronald Reagan could no longer recognize his elder son, hugs took the place of familiar words, Michael Reagan said Thursday, speaking emotionally of their relationship during his father's descent into Alzheimer's. "As the years went by and he could no longer recognize me, I began a process of hugging him whenever I would see him. I would hug him hello and hug him goodbye," Michael Reagan said during a tribute to his father at the Eisenhower Executive Office Building, part of the White House complex. One time, he said, he forgot to hug his father goodbye. The former president...