A congressional watchdog is pressing the Pentagon to explain its role in recommending to the Treasury Department companies to receive loans from a $17 billion COVID-19 rescue fund. The Treasury Department fund, which has gone almost entirely unspent because most contractors disliked the terms, is also the subject of behind-the-scenes debate on Capitol Hill. It has additionally drawn the attention of the Congressional Oversight Commission, established to oversee the $2.2 trillion in COVID-19 stimulus spending. On Aug. 7, the commission...