"Unconstitutional legislation" refers to laws or regulations that go against the principles outlined in a country's constitution.
Full definition
The 5 - 2 ruling in Nur represents another rebuke of the Conservative government which has developed a unenviable track record
of unconstitutional legislation.
If my memory is correct, the SCC dealt with the small (g) problem that s. 52 of the Constitution Act, 1982, provides that
unconstitutional legislation is «of no force and effect».
WASHINGTON — Planned Parenthood Federation of America denounced today's House Judiciary Committee passage of dangerous and
unconstitutional legislation that would ban abortion at 20 weeks nationwide — interfering in a woman's ability to make personal decisions about her pregnancy in consultation with her doctor.
This session, for the first time ever,
this unconstitutional legislation was heard in the Civil Justice Subcommittee and passed favorably with 8 Republican yeas, 2 Democratic nays and 1 Republican nay.