(5 Jan 2018) FOR CLEAN VERSION SEE STORY NUMBER: apus090087 The Trump administration threw the burgeoning movement to legalize marijuana into uncertainty Thursday as it lifted an Obama-era policy that kept federal authorities from cracking down on the pot trade in states where the drug is legal. Attorney General Jeff Sessions will now leave it up to federal prosecutors to decide what to do when state rules collide with federal drug law. Sessions' action, just three days after a legalization law went into effect in California, threatened the future of the young industry, created confusion in states where the drug is legal and outraged both marijuana advocates and some members of Congress, including Sessions' fellow Republicans. "I think most U.S. attorneys who reside in legal cannabis states have seen that the cannabis reform laws have actually been a benefit to public safety, not at a detriment," said Steve DeAngelo, CEO of Harborside marijuana dispensary in Oakland. Colorado's U.S. attorney, Bob Troyer, said his office won't change its approach to prosecution, despite Sessions' guidance. Prosecutors there have always focused on marijuana crimes that "create the greatest safety threats" and will continue to be guided by that, Troyer said. The largely hands-off approach to marijuana enforcement set forth by Barack Obama's Justice Department allowed the pot business to flourish into a sophisticated, multimillion-dollar industry that helps fund some state government programs. What happens now is in doubt. "In deciding which marijuana activities to prosecute under these laws with the Department's finite resources, prosecutors should follow the well-established principles that govern all federal prosecutions," considering the seriousness of a crime and its impact on the community, Sessions told prosecutors in a one-page memo. While Sessions, a longtime marijuana foe, has been carrying out a Justice Department agenda that follows Trump's top priorities on such issues as immigration and opioids, this change reflects his own concerns. He railed against marijuana as an Alabama senator and has assailed it as comparable to heroin. Trump, as a candidate, said pot should be left up to the states, but his personal views on marijuana remain largely unknown. It is not clear how the change might affect states where marijuana is legal for medical purposes. A congressional amendment blocks the Justice Department from interfering with medical marijuana programs in states where it is allowed. Justice officials said they would follow the law, but would not preclude the possibility of medical-marijuana related prosecutions. Officials wouldn't say whether federal prosecutors would target marijuana shops and legal growers, nor would they speculate on whether pot prosecutions would increase. They denied the timing was connected to the opening of California sales, which are projected to bring in $1 billion annually in tax revenue within several years. And, the officials said, Thursday's action might not be the only step toward greater marijuana enforcement. The department has the authority to sue states on the grounds that state laws regulating pot are unconstitutional, pre-empted by federal law. Asked about the change, White House spokeswoman Sarah Sanders said only that Trump's top priority is enforcing federal law "and that is regardless of what the topic is, whether it's marijuana or whether it's immigration." Find out more about AP Archive: http://www.aparchive.com/HowWeWork Twitter: / ap_archive Facebook: / aparchives Instagram: / apnews You can license this story through AP Archive: http://www.aparchive.com/metadata/you...