In one of the largest sums ever donated to charity by a U.S. public official, Vice President Dick Cheney and his wife Lynne gave away nearly $7 million last year to help the poor and to medical research. According to income tax information released by the White House on Friday, the Cheneys' adjusted gross income in 2005 was $8,819,006. The sum was largely the result of Mr. Cheney's stock options from Halliburton and royalties from three books written by Mrs. Cheney. The Cheneys gave more than three-quarters of their income - $6,869,655 - to several charities, including George Washington University's...