The Trump administration is causing serious paranoia among marijuana advocates with its hints of a federal crackdown on recreational use. But Attorney General Jeff Sessions has privately reassured some Republican senators that he won't deviate from an Obama-era policy of allowing states to implement their own marijuana laws. But a large group of bipartisan senators aren't taking any chances. They sent a letter urging Sessions to uphold the Obama-era policy. A Justice Department spokesman said senators should mellow out. "The department’s current policy is reflected in the 2013 Cole Memo," the DOJ spokesman said, referring to the Obama policy.