Hart gave a speech before the American international law firm Coudert Brothers on September 4, 2001, exactly one week before the September 11 attacks, warning that within the next 25 years a terrorist attack would lead to mass deaths in the United States. Hart met with aviation executives in Montreal, Canada, on September 5, 2001, to warn of terrorist attacks. The "Montreal Gazette" reported the story the following day with a headline, "Thousands Will Die, Ex-Presidential Hopeful Says." On September 6, 2001, Hart met with National Security Adviser Condoleezza Rice to urge, "You must move more quickly on homeland security. An attack is going to happen." In a subsequent interview with Salon.com, Hart accused President George W. Bush and other administration officials of ignoring his warnings.