Could Someone Look Up "Conflict of Interest" and Then Explain This to Me?

Bushes' Assets May Top $20 Million; Cheneys', $94 Million:

"The Cheneys reported owing $529,636 on taxable income of $1,961,157 in 2005, according to their tax return, released last month. The couple's total income in 2005 was $8.8 million, largely as a result of stock options Cheney, 65, received before stepping down as chairman of Houston-based Halliburton Co., the world's largest oil-field services company, to run for vice president in 2000."