The recent proposal is ATF fine tuning what it's definition of "sporting purpose" is for shotguns.
It only affects imported guns.
Bingo. Fine tuning is right. In 1984 and again in 1986 the BATF ruled that certain imported shotguns did not meet the "sporting purposes" clause of the GCA 1968.
It has nothing to do with Remington or any other US made shotgun.