The tobacco companies sued under the Act challenged its constitutional validity.

He challenged the constitutional validity of the regulation.

The act's constitutional validity even during peacetime has been described by some sections as an anachronism.

It had to be clear, however, that no pronouncement was made in the present judgment on the constitutional validity of polygynous unions.

There is some debate over the constitutional validity of this legislation, since it involves Parliament acting to bind its own legislative power.

Any prior restraint on expression comes to this Court with a 'heavy presumption' against its constitutional validity.

The High Court rejected the challenge to the constitutional validity of the legislation in a three to two decision.

The coalition parties sought to prevent the joint sitting by challenging its constitutional validity in the High Court.

Judge Bork denounced the ruling as a judicial usurpation without constitutional validity.

In 1935, the Judicial Committee upheld the constitutional validity of that amendment.