Guantanamo Questions

The Pentagon announced this week that they will be releasing 141 Guantanamo Bay detainees who are no longer considered to be a threat to the U.S. I believe that this is long overdue, but before I start patting people on the back, I have a few questions that need to be answered:

1.) If these soon-to-be-released prisoners are no longer a danger , how is that? What changed thier ways in the last four years?

2.) Were they ever a threat? If yes, what was the threat?

3.) How freakin' long does it take to determine whether or not someone is a threat?

4.) What about the approximately 330 remaining prisoners? Why have so few been charged? How dangerous are those who have yet to be charged or released?

5.) How are the American people helped by denying these detainees access to American courts?

and last but not least...
6.) Is this a poor attempt by a struggling majority to boost ratings in an election year?