CEO Andy Williams said the announcement that he's open to prosecution could turn years of work and millions of dollars of investment in his store Medicine Man Denver into a criminal enterprise. He said Attorney General Jeff Sessions' action goes against the will of Colorado voters, who legalized marijuana in 2014.

SAN FRANCISCO — Last week’s announcement that the U.S. Justice Department was ditching its hands-off approach to states that have legalized marijuana initially sent some in the industry into a tailspin, just days after California’s $7 billion recreational weed market opened for business.

But for long-term pot purveyors accustomed to changing regulatory winds, the decision was just another bump in a long and winding road to proving their business legitimacy.

Many in the industry said they’re keeping a wait-and-see attitude because the effect of Attorney General Jeff Sessions’ announcement depends on whether federal prosecutors crack down on marijuana businesses operating legally under state laws. Sessions provided no details other than saying individual U.S. attorneys are authorized to prosecute marijuana operators as they choose.

In Colorado, CEO Andy Williams said the announcement that he’s open to prosecution could turn years of work and millions of dollars of investment in his store Medicine Man Denver into a criminal enterprise. He said Sessions’ action goes against the will of Colorado voters, who legalized marijuana in 2014.

“Any action by the attorney general goes against the public sentiment,” he said. “I don’t think it’s a smart move. Of course, we haven’t seen what it is yet, so we’ll wait and see.”

“The announcement was largely symbolic,” said Patrick Moen, general counsel of Privateer Holdings, a Seattle-based venture capital firm that invests in marijuana businesses. “This kind of stunt will not have a substantial effect on the industry.”

Moen noted Sessions’ action doesn’t change federal law, which includes a congressional provision barring authorities from spending federal money to prosecute medical marijuana operations that abide by state laws.

He conceded that the action would have a “near-term chilling effect” on the industry’s lobbying effort to compel banks and insurance companies to accept its business. Banks and insurance companies refuse to do business with cannabis companies because marijuana is illegal under federal law and most financial institutions are federally insured, forcing marijuana businesses to operate in cash.

Most of Seattle-based Privateer’s $150 million in investments are in companies based outside the United States, and Moen conceded that Sessions’ action would keep it that way for the short term.