WASHINGTON (CP) - The U.S. government raised its terror threat level to "high risk" orange on Friday, warning of a growing possibility that the al-Qaida network would launch an attack against the United States to coincide with Muslim holy days. Changing the terror alert colour from "yellow" triggered tighter government security. Officials also urged greater vigilance by all Americans. Attorney General John Ashcroft said the government had received intelligence information, corroborated by multiple sources, that Osama bin Laden's terror organization sought to attack Americans at home or abroad during the time of the annual hajj pilgrimage to the holy Saudi...