In Central Florida there is a ton of Wal Marts, and about 1/3 of them carry guns, all carry ammo, and none of the ones I have been to have indicated there is any movement to discontinue the practice.
The inference in that article is Obummer and Delaware's No 1 boy are about to offer a deal to Wal Mart to have them be the only one to do background checks. Wal Mart is not currently set up to do that, though that could change, and why would you want to discontinue the current system of FFLs? Other then to mightily delay the process, which might be the goal.
I don't think Wal Mart will bite. That Lib that wrote that was fishing I think.