"Biden said that this is a moral issue" According to the left/progressives/dems/socialists so is abortion when they say that you can't legislate morality. As usual they make statements to support their opinion when convenient and they abandon them when it doesn't fit their agenda.
They can try to confiscate... good luck.
Owning a gun is a constitutional right just like voting is and again the attorney general in fact seems to think voter ID laws are too restrictive to be required. IMO, even a background check is too restricted (much more than showing an ID to vote is) for me to exercise my rights.