of making it effective." Now, as to the substantive portions of the
Immigration Act, that is, those regulating immigration, it is already
firmly decided in previous cases that the Act is valid and operative,
and is, therefore, within the prescribed limits set by the Constitution.
The only question remaining is whether the ancillary or incidental
provisions enacted with reference to procedure in a Court of justice
go outside the limits, or whether they, however drastic, are anything
more than evidentiary sections - not in any way enlarging or attempt-
ing to enlarge the powers of the Parliament, but securing the effective
enforcement of an otherwise admittedly lawful exercise of a power
expressly granted. In my opinion, when we have regard both to
principle and to precedent, it is clear the sections are within the
competency of Parliament, and are nothing more than a necessarily
strict requirement as to burden of proof to be satisfied by the best
evidence. 'English lawyers," say Dicey and Keith in the Conflict of
Laws, 3rd ed., at p. 762, " give the widest possible extension to the
meaning of the term ' procedure.' The expression, as interpreted.
by our Judges, includes all legal remedies, and everything connected
with the enforcement of a right. It covers, therefore, the whole
field of practice ; it includes the whole law of evidence," &c. At p.
763 it is pointed out that a rule of law, so far as it affects, not the
enforcement of a right, but the nature of the right itself, does not come
under the head of procedure. That distinction is, I venture to think,
the touchstone for determining this case. In which category do
the assailed sub-sections fall? Little, if any, objection would, T
apprehend, be taken to them if they were confined to the matters
included in the subdivided paragraphs of sub-sec. 3. But, as already
shown, those paragraphs are inseparably connected with the previous
words of the sub-section. The crucial question resolves itself, then,
into this: Is it within the competency of Parliament or not to cast
the burden of proof as to whether a person is an "immigrant " on
that person, or must that burden always, by the Constitution, rest
on the Crown? It is not out of place to point out that this Court,
as recently as 1924, constituted by three Justices (my brothers