By Michael R. Blood

The Associated Press

LOS ANGELES — A proposal in Congress to ease the U.S. ban on marijuana could encourage more banks to do business with cannabis companies, but it appears to fall short of a cure-all for an industry that must operate mainly as a cash business in a credit card world.

Marijuana is legal in some form in about 30 states, but companies that grow or sell it often are locked out at banks. Their money isn’t wanted because the drug is illegal under federal law and transactions tied to pot proceeds could expose financial institutions to money-laundering charges.

The bipartisan measure — which received tentative support from President Donald Trump — would ensure states have the right to determine the best approach to marijuana, without federal interference. It also includes language intended to address the banking gap caused by the federal ban.

The legislation has been praised as a strong step, but “standing alone, it’s likely not a silver bullet for the banking problem,” said California pot industry attorney Nicole Howell Neubert, a member of a state task force that studied the banking stalemate.

“Most financial institutions will be looking for even more affirmative direction from (Washington) to feel comfortable with banking cannabis companies,” she said.

The shortage of banking services has been a major obstacle to the industry, often forcing businesses to conduct sales and pay vendors and taxes in cash, sometimes in vast amounts that can become targets for criminals. The number of financial institutions working with marijuana companies has been growing, but it’s a small fraction overall.

The Mountain West Credit Union Association and the Maine Credit Union League said that the legislation would “provide the certainty we need ... to service this growing industry.”

The measure, which faces an uncertain future in Congress, does not legalize marijuana nationally. But it takes steps to allow banks to handle marijuana funds without the risk of federal prosecution.

For example, it says money from marijuana businesses in states where the drug is legal would no longer be considered illegal proceeds, and it would allow banks to accept those funds without breaking money-laundering laws.

Even then, risk remains as banks face a range of compliance rules by accepting marijuana-linked money. The Bank Secrecy Act requires that banks know their customers well enough to ensure they are not engaging in money laundering, said Julie A. Hill, a professor at the University of Alabama School of Law.

“This likely means that a bank accepting marijuana money would have to do enough research to know that their customers are complying with state law regarding the sale of marijuana,” Hill said. “The bank would likely have to confirm that the marijuana is not sold to minors or sold for transport to states where it is illegal.”

Banks could face penalties if they don’t meet such requirements.

They are urged to watch for warning signs of possible illegal activity, such as financial statements provided by a business not squaring with account activity.

Because the cost of doing such research would be high, some banks might choose to stay away from marijuana money, Hill wrote in an email.

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