Arianna Huffington points out that the Drug War has been
distracting the FBI :

Even after last week's highly touted reorganization, which included the reassignment of 400 narcotics agents to counterterrorism, there will still be 2,100 agents spending their invaluable time and energy fighting a fruitless drug war. This despite the fact that combating drugs didn't even make Director Mueller's official Top Ten list of priorities.

Which raises the question: if the drug war is suddenly lower on the FBI pecking order than combating white collar crime (#7), protecting civil rights (#5), and taking on public corruption at all levels (#4 with a bullet!), then how come 1 out of 6 agents will still be working that beat? The numbers just don't add up.

According to high-ranking FBI officials, Mueller originally intended to pull the plug on his agency's involvement in the drug war, shifting every one of his counternarcotics agents to counterterrorism activities, but was talked out of it by drug war generals who can't admit defeat.