1) Who should be able petition to the USA government ???
People of The United States of America.
But now everybody can petition(create and sign) to OUR government, even terrorist, our enemies, and people who just do not like or might be hate US.
2) Registration and signing process is so unprotected that even I, regular computer user, can automatically cheat this service(and first couple hundreds signatures made by machine). Can you imagine what a real hacker can do?
P.S. Hope it’s a single case, but when I made first petition system give me wrong link to it, I had to manually put # at the end in order to make it work.
P.P.S. Give people ability to report a bug/mistake to site admins/developers(On a bottom for example, like most sites do).