OTTAWA - The Harper government is trying to push a controversial anti-union bill through the Senate.

The private member's bill (Bill C-377) initiated by Conservative MP Russ Hiebert would force unions to publicly disclose details of their spending.

The bill sparked a revolt among Conservative senators in June 2013.

Sixteen Tory senators joined with the Liberals to approve amendments that gutted the bill while another four Tory senators abstained.

Before the House of Commons could consider the Senate amendments, Prime Minister Harper prorogued Parliament.

In accordance with rules for reinstating legislation following prorogation, the bill wound up back before the Senate in its original form.