It has been criticized as unconstitutional on the grounds it treads on provincial jurisdiction.

Tory Senator Hugh Segal became one of its most vocal critics and proposed an amendment to limit the bill’s scope to only the largest unions and not to branches and locals. It has passed with the help of former Peace River North MLA  Neufeld and 15 other Conservatives.

Another six Tories abstained, leaving less than half the government bench voting to keep the bill intact. The bill will return to the Commons in the fall.