...recommendation of the administrative officer, hereinafter provided for, from any amounts due on any contract or may be recovered in suits brought in the name of the United States of America by the Attorney General. All sums withheld, collected, or recovered under the provisions...

...said contract set forth in section 1 hereof may be withheld from any amounts due on any contracts or may be recovered in suits brought in the name of the United States of America by the Attorney General thereof. All sums withheld or recovered for underpayment...