The decision in the Al-Marri case means the president still has the power to hold 'enemy combatants' indefinitely without charge.
The US pledged $900 million, but said the money would not go to Hamas.
Rebel leaders Issa Sesay, Morris Kallon, and Augustine Gbao were found guilty Wednesday on more than a dozen counts each of crimes against humanity.
He ordered the case of enemy combatant Ali Al-Marri, who has been held in solitary confinement for five years without charges, to be moved to the US criminal justice system.
The incident highlights a shift from unquestioned deference toward the royal family.
A prominent Muslim scholar in Saudi Arabia has warned that those using alcohol-based biofuels in their cars could be committing a sin.