Can USA presidential acts be signed by "autopen", that is, by Biden wife / child / crazed staffer, who uses mechanical device to forge President signature?

IF President approves some other way & says "machine can sign it" - but how could that be proven?

Isn't it better to rely on real signatures?

If Senile Biden couldn't sign, read, follow or honestly approve things - Why wasn't USA "25th Amendment" invoked to make Kamabla "acting President" ? (question answers itself DRUNK)

If Criminal Biden was too senile to stand trial (Hur report) or run for President.... how can it be shown or believed that he ever approved anything?

Does legality come down to, Which family or staffer controls his autopen?

If autopen can't be allowed: Are Biden's acts, especially his last few acts, null & void?

"Joe Biden did not sign [his final pardons] but more important, he did not know anything about them" - But what if Biden lies & claims he did know? Can perjury be proved? Should it?