I am not too worried. Yes, shipments are getting held back from time to time.. but that is usually the fault of the shipping company using the wrong HS code. If things crack down the way that everyone is worried about, you wouldn't see wallmart, wallgreens, target, costco, and other major companies taking the time to stock them, sign papers, negotiate prices, etc.
My best advice is this: Don't get too worked up in the logistics. We are dealing with importing on a daily/weekly basis, and we will know what is going on first. There is a lot of speculation in the News, so take it from the people who are actually living it. There is a scare out there, but the shipments are still coming through. I am not going to sweat it until any and all shipments start getting seized.