Earlier quoted context omitted.
This seems preposterous to me. We are not in China here.
There is plenty of precedent for the US government issuing national security letters (“NSLs”) containing gag orders for ongoing investigations, often with massive monetary penalties imposed for violations.
I don't think the U.S. government can compel companies to lie. It can, though, request them to.
If the NSA said "your servers were compromised by a state-sponsored scheme, and we'd like your co-operation in running counterintelligence operations" I think it would be fair for a company to say "yes". Particularly if part of the offer included help extracting infected hardware from said company's infrastructure.