The Conservatives introduced 17 crime bills in this past legislative session, of which only three passed before proroguement. Justice Minister Rob Nicholson criticized the Liberals for holding up legislation. To this, Nova Scotia Liberal Senator James Cowan, leader of the Opposition in the Senate, wrote Nicholson to say, among other things, that the Conservatives were slow to implement bills already passed. The Hill Times reports,

At a press conference in January Prime Minister Harper implied that a member of the so-called Toronto 18 terror suspects was able to get out of jail earlier because the Liberals held up the government's changes to the two-for-one sentencing act, even though it was his government that waited four months to implement the bill. Bill C-25 received third reading in the Senate on Oct. 21, 2009, but will not come into force until 2010. Additionally, Bill C-14, dealing with organized crime, received third reading in the Senate on June 22, 2009, but was not brought into force by the Harper government until Oct. 2. Bill S-4, which was started in the Senate and strengthens laws around identity theft, received third reading in the Senate on June 11, 2009, and in the House of Commons on Oct. 20, but wasn't implemented until Jan. 8, 2010.

So why is that?