It is unclear what the effect is. The president hasn't been able to close it. There's an interesting Canadian sidebar to constitutional protection. With Canada's secret connivance, a Canadian engineer returning to Canada was picked up by US authorities in New York and sent to Egypt to be imprisoned and tortured. Canada paid something like $6 or 10 million to the engineer. My opinion is those suspected or engaging in terrorist activity should go through civil courts and if found guilty do their time as other criminals. Five-10 years in jail without charge even under military commissions seems wrong to me.