COCHISE COUNTY, Arizona—Millions of dollars of unfinished border wall materials have lain in the deserts of Arizona since January last year after President Joe Biden halted all construction the day he took office. “It shall be the policy of my administration that no more American taxpayer dollars be diverted to construct a border wall,” Biden’s Jan. 20, 2021, executive order states. “I am also directing a careful review of all resources appropriated or redirected to construct a southern border wall.” Construction companies downed tools and left job sites the next day, and stacks of materials have languished since. Now, they’re looking to sell it all for scrap, according to the Cochise County Sheriff’s Office. “They’re probably going to get a penny on the dollar for it,” Sgt. Tim Williams said. The steel bollards on fence panels are filled with concrete. Concrete culverts are sitting abandoned, filling with mud, instead of …