Officials from the Department of Energy have for months been sitting in on board meetings as "observers" at Solyndra, getting an up-close view as the solar energy company careened towards bankruptcy after spending more than $500 million in federal loan money. Word of the Energy Department's unusual arrangement came as federal agents on Thursday converged on the California headquarters of the failed solar company, focusing fresh attention on the first corporate beneficiary of President Obama's stimulus program to create new clean energy jobs. The company, which closed its doors last week and laid off 1,100 workers, has been a subject...