Actually there are a slew of gun laws on the books already, which, if enforced, quell many of the public's fears. Historically LE has been lax and even unsuccessful enforcing them, leading to public outcry that stronger more restrictive laws are needed. There is one possible exception, the intention of the Second Amendment, does not envision automatic weapons. As such it could be argued that these weapons do not fall under the protection of the Second Amendment and therefore are illegal.
Otherwise, any discussion or debate over whether or not our right to bear arms could or would ever be taken away by Congressional repeal is surely intended for entertainment purposes only. Congress is the the only government branch with the power to repeal the Amendments to the Constitution and even so the successful exercise of that power requires unanimous agreement. Of that ever happening, we need not fear, since I doubt that Congress agrees on the time. Thus, public concern about the subject can be put out to pasture, as it is unlikely this bunch could reach a quorum to discuss repeal. much less have the votes to do it.
But let's say for argument's sake that Congress by some hook or crook had the votes to repeal a Constitutional Amendment. Can you imagine the number of man-hours and the amount of man-power needed for the task. Not to mention the cost, which would be astronomical.
Statistically the approximate numbers of illegals in the country are a known. However, to date no process or nebulous plan has been hatched by even the most ardent Congressional member as to how to expeditiously find and remove them.
Guns are legal, so it is doubtful that there is much data in existence regarding how many guns there are, who has them and where.. Lacking such vital information reduces any attempt to remove them from anyone. In fact any such undertaking would be on a par course with a flea climbing up a dog's leg with rape on its mind. In other words, IMPOSSIBLE.
Please, don't stop debating the subject, but do stop worrying about whether or not it will ever come to fruition.