Kamala shmamala.
Many obstacles there... first, she has to get elected.
So then, she writes an EO.
Then she has to get SCOTUS to sign off on it.
Then she's going to have to face all the law enforcement that won't do door-to-door confiscation on her order. They are, mostly, good people, and mostly, they are not stupid.
Then there are the millions of gun owners themselves. Many will fold and turn them in. Many more will not.
I predict she won't ever get the chance to run against Trump.
That said, what the Mexicans did there was nothing less than an act of war, and they should be made to pay for it.
Careful...the older I get, the less "life sentence" is a deterrent.