Mohamed Mohamud faces a maximum sentence of life in prison for the plot that was actually an FBI sting. Agents posing as terrorists supplied the fake bomb that Mohamud tried to detonate at a Christmas tree-lighting ceremony.
In court documents, government lawyers ask a federal judge to sentence Mohamud to 40 years in prison, saying he never wavered in his willingness to kill thousands.
Defense attorneys seek a 10-year sentence. They say the plot wouldn't have happened without government involvement and Mohamud has shown remorse.