australian customs in drug smuggling claims, page-3

I think we need to run two investigations/enquiries here.

One for the drugs/customs issue and another on the history/background of the people found to be involved.

I have a suspicion that the vast majority will be people we have allowed into our great country from other countries around the world and these people are now abusing that privilege.

Why is it not written in law that any new arrival to our country is automatically deported upon conviction of a serious crime?