Section 12 of the Migration Act, 1958 provides,
for present purposes, that where an alien has been
convicted in Australia of any offence for which he
has been sentenced to imprisonment for one year or
longer the minister may, upon the expiration of, or
during, any term of imprisonment served or being
served by that alien in respect of the crime, order
the deportation of that alien. There is no dispute
between the parties that the applicant is an alien
for the purposes of the section or that the condition
precedent to the existence of the power, namely,
conviction with the specified consequences, has been
fulfilled. The main issue between the parties before
the tribunal was the general assue on the merits,
namely, whether 1n all the circumstances of the case
the minister's order that the applicant be deported
should be affirmed or, alternatively, whether a
recommendation should be made that it be revoked.
Before this court, the issue, being restricted to
a question of law, needs to be defined with much
greater precision.