The Supreme Court of Canada unanimously ruled Friday that the country's anti-terror law is constitutional in a series of decisions that affirm how terrorism is defined in the Criminal Code.

The court in a 7-0 ruling rejected constitutional challenges brought by three men, including Momin Khawaja, the first person charged under the anti-terror law that was passed in the wake of the Sept. 11, 2001, terrorist attacks on the United States. Khawaja was convicted of collaborating with a group of Britons in a thwarted 2004 bomb plot in London.

The rulings also upheld the extradition order against Suresh Sriskandarajah and Piratheepan Nadarajah. Both men can now be sent to the U.S. to face charges of supporting the Tamil Tigers, a Sri Lanka group vying to establish an independent ethnic Tamil state, which many have called a terrorist organization. U.S. prosecutors allege the two men tried to purchase $1 million worth of guns and rockets for the group.