I was at a Wal Mart in Casselberry, FL today. Locker was empty. The guy in Sporting Goods said that Wal mart was still getting deliveries, but not as much ammo as the warehouses were not getting as much. To his knowledge there was no movement to stop ammo sales. This Wal Mart does not sell long guns.
I went to work and asked the internet if they were suspending sales, and this is what I got:
http://www.wnd.com/2013/01/walmart-responds-to-suspended-ammo-story/
Per the report, it was denied by Wal Mart.