President George W Bush on Monday lashed out at critics of Attorney General Alberto Gonzales, who resigned from the top law enforcement post, for unfair treatment and dragging his name "through the mud."Bush, before leaving Texas to attend Republican fund-raisers, called Gonzales a man of integrity, decency and principle, and said he had reluctantly accepted the resignation, which came "after months of unfair treatment that has created a harmful distraction at the Justice Department." "It's sad that we live in a time when a talented and honourable person like Alberto Gonzales is impeded from doing important work because his good name was dragged through the mud for political reasons," he added.