Jim Carlson, the owner of a head shop, says a new federal ban on the sale of five chemicals used to make synthetic marijuana won't make much difference - he'll just stock brands that use other, still-legal substances. Carlson said that with about 210 similar chemicals available, the manufacturers will try to keep one step ahead of the government. "Unfortunately he is correct," said Barbara Carreno, a DEA spokeswoman in Washington, who confirmed Tuesday that many suppliers are offering retailers products with new chemicals. "There are many of these substances and we chose five common ones because we don't have the resources to study all of them."

A panel of New Hampshire lawmakers is considering a bill to legalize marijuana for medicinal purposes. Under the bill, possessing two ounces or less of medical marijuana would not be a crime. New Hampshire's legislature passed a medical marijuana bill two years ago, but Gov. John Lynch vetoed it.

Half of the cities in Mexico have registered at least one drug prohibition murder since President Felipe Calderon took office in December 2006. Of the country’s 2,456 municipalities, 1,147 registered at least one murder committed by drug trafficking organizations between December 2006 and the end of 2010. A total of 15,273 people died in prohibition violence in Mexico last year, and more than 34,000 people have died since Calderon declared war on the country’s drug trafficking organizations shortly after taking office.

The Mexican political world was sent reeling after a former PRI politician admitted his party had exercised strong control over Mexico's drug trafficking routes. Former Nuevo Leon governor Socrates Rizzo said that previous PRI presidents had formalized agreements with drug trafficking organization leaders to coordinate and protect Mexico's lucrative drug trade. Rizzo argued that presidential control over smuggling prevented the widespread violence that has been commonplace since 2000.

A synthetic form of marijuana is widely used at the U.S. Naval Academy because it cannot be detected in routine drug tests, according to several former midshipmen. Since its introduction at the academy last year, synthetic marijuana has become popular among rank-and-file midshipmen and on the football and wrestling teams. Some isolated corners of the historic Annapolis campus have become well-known gathering spots for smoking it.

Immediately after the Seattle Times ran an editorial last week supporting a bill to tax and regulate marijuana, the newspaper got a phone call from Washington, D.C. The White House Office of National Drug Control Policy director Gil Kerlikowske wanted to fly to Seattle to speak personally with the paper's full editorial board. The meeting is apparently an attempt by the federal government to pressure the state's largest newspaper to oppose marijuana legalization. Or at least turn down the volume on its new-found bullhorn to legalize it.

A bill to legalize marijuana was quietly introduced last week. Sponsored by Amherst Democrat Ellen Story, the bill could reap thousands of dollars for the state in tax revenue. "Reps come up to me and say thank you so much for doing this Ellen. I support you, but I can't be public about it. Legislators are afraid of being seen as soft on drugs," Story says.