WASHINGTON - The Interior Department's inspector general didn't find political interference by Vice President Dick Cheney on a key environmental policy in part because investigators weren't looking for it, an Interior official said Tuesday. A 2004 report by the inspector general found no basis for a claim by then-Democratic presidential candidate John Kerry that White House political advisers interfered in developing water policy in the Klamath River Basin in California and Oregon. But investigators did not ask about Cheney — and no Interior employee volunteered information about him, said Mary Kendall, deputy Interior inspector general. A former high-ranking Interior official,...