Radley Balko highlights two examples:

Los Angeles County Sheriff Lee Baca says that if Prop 19 if it passes, he won’t abide by it. He’ll keep arresting marijuana offenders anyway.

U.S. Attorney General Eric Holder, who reports to President Obama (man of the people!), says he has no intention of respecting the wishes of Californians, either: “We will vigorously enforce the [Controlled Substances Act] against those individuals and organizations that possess, manufacture or distribute marijuana for recreational use, even if such activities are permitted under state law.”

The official position of the Obama administration, then, [is] that the states are free to pass laws that further restrict economic and personal freedom (see its support of California’s stringent environmental regulations, and its support for the rights of states to discriminate in gay marriage and gay adoption), but promises to crack down on any state that attempts to expand freedom.