Eduardo - the ARRL's case smells of IBOC
 

"Court Finds FCC Violated Administrative Procedure Act in BPL
Decision"

"In its decision, the Court agreed with the ARRL that the FCC had
failed to comply with the Administrative Procedure Act (APA)... ARRL
President Joel Harrison, W5ZN, concluded: 'I am very pleased that the
Court saw through the FCC's smoke screen and its withholding of valid
engineering data that may contradict their position that the
interference potential of BPL to Amateur Radio and public safety
communications is minimal.'"

http://www.arrl.org/news/stories/2008/04/25/10064/?nc=1