Congress can normally block an arms sale to another country if enough members object, and this resolution does exactly that: it would stop a specific, already-proposed sale of U.S. military equipment and related services to Israel from going through. If passed, the sale simply wouldn't happen — the weapons or services in question wouldn't be delivered to Israel under this deal. The resolution doesn't create new policy or address arms sales in general; it applies only to this one particular sale that the executive branch had already notified Congress about.