Ron Dellums, who earns about $184,000 as Oakland mayor on top of a congressional pension, appears to owe the Internal Revenue Service at least $66,554. A lien has been placed against his property for failing to pay taxes for 2006. According to the East Bay Express, which broke the story, Mayor Dellums and his wife, who file jointly, may owe more than $239,000 in taxes, mostly for the years he worked as a lobbyist in Washington, DC.