The report by the Commission of Inquiry into the Actions of Canadian Officials in Relation to Maher Arar has been released (pdf.)

This was one of the more telling disclosures:

In October 2002, (Canadian Security Intelligence Service) officials knew that the United States might have sent Mr. Arar to a country where he could be questioned in a "firm manner." In a report to his superiors dated October 11, 2002, the CSIS security liaison officer (SLO) in Washington spoke of a trend they had noticed lately that when the CIA or FBI cannot legally hold a terrorist suspect, or wish a target questioned in a firm manner, they have them rendered to countries willing to fullfull that role. He said Mr. Arar was a case in point.

Spencer Ackerman at TPMMuckraker has more. Some background is here. While Canada awarded Mr. Arar $9 million in damages and issued a public apology, the U.S. has kept him on the terror watch list.

All of TalkLeft's Maher Arar coverage is accessible here.