The president lamented Tuesday morning that the judicial process of sending Sayfullo Saipov as an "enemy combatant" to the military facility in Cuba would "statistically" take longer than going through the federal system.
Sayfullo Habibullahevic Saipov, the suspected driver who killed eight people in NY on October 31, 2017, mowing down cyclists and pedestrians, before striking a school bus in what officials branded a "cowardly act of terror".
In a follow-up post, Trump added: "There is also something appropriate about keeping him in the home of the awful crime he committed. SHOULD GET DEATH PENALTY!" the president tweeted.
Sessions said the administration would "use all lawful tools at our disposal" in the fight against terror, leaving open the possibility of sending suspects to Guantanamo, but touting for the first time the hundreds of terrorism-related convictions the Justice Department has secured since the September 11, 2001, attacks.
The maximum penalty for the first is death; the maximum for the second life in prison, Kim said.
The lawyers for Bowe Bergdahl, who deserted his base in Afghanistan in 2009, argued unsuccessfully that candidate-Trump's comment that he was a "traitor" would taint any trial.
"In court papers, federal authorities said that Sayfullo Saipov told the FBI that he began planning his attack a year ago, though he settled on using a truck as a weapon only two months prior", The Washington Post reported.
"ISIS just claimed Degenerate Animal who killed, and so badly wounded, the wonderful people on the West Side, was "their soldier", he wrote.
It will endure." The phrase "it will endure" commonly refers to the Islamic State group, and Saipov had a cellphone loaded with the group's propaganda, an Federal Bureau of Investigation agent said in the criminal complaint. He was shot after he jumped out of the vehicle brandishing two air guns and yelling "God is great!" in Arabic, they said.
USA law enforcement officials said Saipov had been in contact with Kadirov and another person of interest in the investigation.
Experts say the federal government, unlike some states, shows little eagerness to execute - and in any case, appeal processes can last years and even decades.
And he urged Congress to end the Diversity Immigrant Visa programme under which Saipov entered the United States in 2010.
"What we're doing is every time we are attacked from this point forward and it took place yesterday, we are hitting them 10 times harder", Trump said.
"We need quick justice and we need strong justice - much quicker and much stronger than we have right now - because what we have right now is a joke, and it's a laughingstock", Trump said at a Cabinet meeting.
Eight people were killed, five of them friends from Argentina celebrating the 30th anniversary of their high school graduation.