For reference of the case: Brazil Quality Stones, Inc Chertoff US Court of Appeals 531 F 3d 1063 (9th Cir, 2008)

http://caselaw.findlaw.com/us-9th-circuit/1162806.html

I would like detailed answered with case references if possible.

1) What business purpose is served by the L-1 visa?

2) Does the INA impose the burden of proof on the transferee and his or her employer to demonstrate that the transferee's responsibilities are primarily managerial?

3) Why did the USCIS deny Santo's petition for an L-1A visa?