The Biden administration has used an emergency authority to allow the sale of about 14,000 tank shells to Israel without congressional review. How and where exactly U.S. weapons are used has come under more scrutiny, even though U.S. officials say there are no plans to put conditions on military aid to Israel or to consider withholding some of it.
Not in the detail I would have liked. So declaring it an immidiate risk to US security is seemingly possible, but what are the standards there? Who can check the justification? What pre-defined guidelines for such an assessment exist?
Congress wrote the law and those particulars I am not aware of, but clearly it would be up to Congress to verify the justifications.