DES MOINES — Opponents of a crude oil pipeline under construction in Iowa continue to fight the project and plan to protest next week after a land condemnation hearing for a central Iowa landowner being forced to allow a Texas oil company to cross his farm. Polk County officials are expected to condemn property Monday on Dan Higginbottom’s farm under eminent domain laws the Iowa Utilities Board authorized Dakota Access to use for its $3.8 billion pipeline cutting across Iowa diagonally.