Obama's commendable change in federal drug enforcement policy

This is one of those rare instances of unadulterated good news from Washington:

The Obama administration will not seek to arrest medical marijuana users and suppliers as long as they conform to state laws, under new policy guidelines to be sent to federal prosecutors Monday.
Two Justice Department officials described the new policy to The Associated Press, saying prosecutors will be told it is not a good use of their time to arrest people who use or provide medical marijuana in strict...