Igor Vovkovinskiy, the tallest man in the United States, has died in Minnesota. He was 38. His family said Vovkovinskiy died of heart disease on Friday at the Mayo Clinic in Rochester. His mother, Svetlana Vovkovinska, an intensive care unit nurse at Mayo, initially posted about his death on Facebook. Vovkovinskiy, who was born in the Ukraine, came to the Mayo Clinic in 1989 as a child seeking treatment. A tumor pressing against his pituitary gland caused it to secrete abnormal levels of growth hormone. He grew to become the tallest man in the U.S. at and ended up staying...