The pot thing just keeps getting more confusing and complex.

Attorney Gen. Eric Holder Jr. has vowed to “vigorously enforce” federal marijuana laws even if Californians  vote next month to legalize pot with Prop 19, the Associated Press reports.

Holder’s comments were contained  in a letter to ex-federal drug enforcement chiefs, AP reported.

The letter did raise questions as to what extent authorities would crack down on small time users and dealers and whether resources were available to even do that, AP reported.

Still Holder wrote:

“We will vigorously enforce the CSA against those individuals and organizations that possess, manufacture or distribute marijuana for recreational use, even if such activities are permitted under state law.”

Three years before Pakistani terrorists struck Mumbai in 2008, federal agents in New York City investigated a tip that an American businessman was training in Pakistan with the group that later executed the attack.

The previously undisclosed allegations against David Coleman Headley, who became a key figure in the plot that killed 166 people, came from his wife after a domestic dispute that resulted in his arrest in 2005.

In three interviews with federal agents, Headley’s wife said that he was an active militant in the terrorist group Lashkar-i-Taiba, had trained extensively in its Pakistani camps, and had shopped for night vision goggles and other equipment, according to officials and sources close to the case.

The wife, whom ProPublica is not identifying to protect her safety, also told agents that Headley had bragged of working as a paid U.S. informant while he trained with the terrorists in Pakistan, according to a person close to the case.

Federal officials say the FBI “looked into” the tip, but they declined to say what, if any, action was taken. Headley was jailed briefly in New York on charges of domestic assault, but was not prosecuted. He wasn’t captured until 11 months after the Mumbai attack, when British intelligence alerted U.S. authorities that he was in contact with al Qaeda operatives in Europe.