Ds has not been invited to candidate visitors weekend but his app is competitive. Is this unusual? He attended NASS so might not attend anyway but wonder about the lack of an invite.
CVW spots are limited. The fact he attended NASS is good and may be the reason he did not get CVW. All you can focus on at this you file. Nail your mid-year progress. Get everything in that is not. Control what you can and take a deep breathe.
