FUCK THESE PEOPLE
END COMMUNISM NOW
The president does not have the authority to do this. The Courts will shoot it down, no pun intended, almost immediately. I am sure red states would ignore it.
But people give the Australian buy back plan too much credit. My understanding is they only collected about 20% of the guns in Australia. Then, a black market of guns sprung up. Australia claims success because of a decrease in gun violence, but I am not sure that is all attributable to the gun buyback.
Remember too, Australia also implemented a very rigid COVID lockdown policy, even incarcerating people (quarantine) in an attempt to stop the spread. Apparently they do not have a strong constitution like the US to protect individual liberty.