The breadcrumbs to go about this should be:
1. Is there any over-arching common-sense legal principle, opinion, declaratory judgement that captures this argument ie
If a legal deadline applies to a task of a government monopoly then that deadline propagates implicitly in any agreements that agency makes with other government monopolies for executing dependent subtasks of the original task, for not doing so would render the original deadline meaningless
keywords: monopoly,contracts,legal deadlines,liability,anti-trust
The key of course is wether anti-trust laws apply to government monopolies. most likely they dont
Or a more simple common sense principle:
If a legal deadline applies to a task of a government agency and that agency is unable to meet the deadline it should
demonstrate good faith effort to meet that deadline. In this case means, expediting name check with FBI
I can think of one case where such argument holds: FCRA, fair credit reporting act. If a consumer denies a derogatory item on his credit report FCRA requires that a credit reporting agency should make a decision in 30 days. This deadline "propagates" to all vendors who report items to the credit bureau. If a vendor is unable to complete the verification in 30 days, credit reporting agencies just go ahead and accept the consumer denial and strike the item off his credit report. now one can argue that this is not same as national security but it comes close, ie a person with bankrupties can wipe out all his backrupties of his credit reports if the original agencies that reported the bankrupties do not act to render a decision in 30 days.
Thiis is a great logical argument. What bothers me is, even though the law is clearly on our side we still loose sometimes. This argument would work alone in any simple civil case, but immigrants complains are truly second-rated and to win even in overwhelmingly clear case you may need to show 100 similar cases as your precedents. In a regular civil complaint, you may only need one or with this argument, nothing else.
But even if we don't find anything else, I might use your example. For Credit reporting agency, it's also Fegderal and the example is fair. We just need to google it to get more details on their conractual agreements with clients.
Thank you, Lotechguy!