Immigrants who use marijuana or who work in the cannabis industry can be denied citizenship, even if they are doing so in states where it is legal, the US Citizenship and Immigration Services said on Friday.

The guidance, issued – coincidentally or not – just before marijuana advocates’ national celebration of their 4/20 holiday, confirms what immigration and activists have cautioned is a legal grey area that penalises would-be citizens because they’ve broken a federal law.

Although recreational marijuana use is legal in 10 states and decriminalised in 14 more, it is still classified as an illegal substance federally.

“The policy guidance... clarifies that an applicant who is involved in certain marijuana-related activities may lack good moral character if found to have violated federal law, even if such activity has been decriminalised under applicable state laws,” the guidance states.

Earlier this month, Denver Mayor Michael Hancock, a Democrat, sent a letter to US Attorney General William Barr asking him to clarify and adjust policy that threatens permanent residents’ path to citizenship if they have worked in the marijuana industry. Colorado was one of the first two states to legalise recreational marijuana use, in 2012. The expansion of marijuana use beyond prescribed medical purposes has cultivated a thriving retail cannabis industry in the state.

Meet the nuns who rake in £850k a year growing and selling cannabis Show all 7 1 /7 Meet the nuns who rake in £850k a year growing and selling cannabis Meet the nuns who rake in £850k a year growing and selling cannabis Sister Kate Meeusen, 60, started the Sisters of the Valley in Merced County, California, in 2011 with just 12 marijuana plants. It is now an international cannabis operation and rakes in £850k a year, treating everything from epilepsy to cancer. Brother Dwight / SWNS Meet the nuns who rake in £850k a year growing and selling cannabis Nuns picking marijuana. SWNYnuns; A documentary about nuns who grow marijuana will be released to mark the weed users holiday of 4/20 in the USA [April 20th]. Sister Kate Meeusen started the Sisters of the Valley in 2011 with just twelve plants, now its an international operation which garners $1.1 million USD in sales each year. The Breaking Habits film, directed by British filmmaker Rob Ryan, explores the history and sustained survival of the weed-growing nuns. Ive seen the film so many times Im sick of it, I didnt like it but everyone else likes it so Im happy about that, said Sister Kate, 60, who resides in Merced County, California with her community of sisters. The film explores how Sister Kate and her team have fought bitterly against white man rule including the obstructionist country sheriff and black market thieves. We dont like the white man rule, said Sister Kate, who makes and sells CBD products such as salves and oils with her sisterhood. Farm people are very slow to adapt to new ideas, people are stuck in the 1950s with their ideas towards the cannabis plant for medicinal use. So far Sister Kate has attempted to cure eight people of addictions using her CBD products, and she says they have all recovered. We have a 100 percent success rate in curing people of their addictions admittedly we dont have a huge sample size, we worked with eight people who were addicted to either alcohol, tobacco or meth, but they all got better, said Sister Kate, who used to work as a high-flying corporate executive before turning to weed farming. Brother Dwight / SWNS Meet the nuns who rake in £850k a year growing and selling cannabis Sister Kate Meeusen, 60, started the Sisters of the Valley in Merced County, California, in 2011 with just 12 marijuana plants. Brother Dwight/SWNS Meet the nuns who rake in £850k a year growing and selling cannabis Brother Dwight / SWNS Meet the nuns who rake in £850k a year growing and selling cannabis Nuns making the CBD products . SWNYnuns; A documentary about nuns who grow marijuana will be released to mark the weed users holiday of 4/20 in the USA [April 20th]. Sister Kate Meeusen started the Sisters of the Valley in 2011 with just twelve plants, now its an international operation which garners $1.1 million USD in sales each year. The Breaking Habits film, directed by British filmmaker Rob Ryan, explores the history and sustained survival of the weed-growing nuns. Ive seen the film so many times Im sick of it, I didnt like it but everyone else likes it so Im happy about that, said Sister Kate, 60, who resides in Merced County, California with her community of sisters. The film explores how Sister Kate and her team have fought bitterly against white man rule including the obstructionist country sheriff and black market thieves. We dont like the white man rule, said Sister Kate, who makes and sells CBD products such as salves and oils with her sisterhood. Farm people are very slow to adapt to new ideas, people are stuck in the 1950s with their ideas towards the cannabis plant for medicinal use. So far Sister Kate has attempted to cure eight people of addictions using her CBD products, and she says they have all recovered. We have a 100 percent success rate in curing people of their addictions admittedly we dont have a huge sample size, we worked with eight people who were addicted to either alcohol, tobacco or meth, but they all got better, said Sister Kate, who used to work as a high-flying corporate executive before turning to weed farming. Brother Dwight / SWNS Meet the nuns who rake in £850k a year growing and selling cannabis Nuns making the CBD products . SWNYnuns; A documentary about nuns who grow marijuana will be released to mark the weed users holiday of 4/20 in the USA [April 20th]. Sister Kate Meeusen started the Sisters of the Valley in 2011 with just twelve plants, now its an international operation which garners $1.1 million USD in sales each year. The Breaking Habits film, directed by British filmmaker Rob Ryan, explores the history and sustained survival of the weed-growing nuns. Ive seen the film so many times Im sick of it, I didnt like it but everyone else likes it so Im happy about that, said Sister Kate, 60, who resides in Merced County, California with her community of sisters. The film explores how Sister Kate and her team have fought bitterly against white man rule including the obstructionist country sheriff and black market thieves. We dont like the white man rule, said Sister Kate, who makes and sells CBD products such as salves and oils with her sisterhood. Farm people are very slow to adapt to new ideas, people are stuck in the 1950s with their ideas towards the cannabis plant for medicinal use. So far Sister Kate has attempted to cure eight people of addictions using her CBD products, and she says they have all recovered. We have a 100 percent success rate in curing people of their addictions admittedly we dont have a huge sample size, we worked with eight people who were addicted to either alcohol, tobacco or meth, but they all got better, said Sister Kate, who used to work as a high-flying corporate executive before turning to weed farming. Brother Dwight / SWNS Meet the nuns who rake in £850k a year growing and selling cannabis CBD products . SWNYnuns; A documentary about nuns who grow marijuana will be released to mark the weed usersâ holiday of 4/20 in the USA [April 20th]. Sister Kate Meeusen started the Sisters of the Valley in 2011 with just twelve plants, now itâs an international operation which garners $1.1 million USD in sales each year. The âBreaking Habitsâ film, directed by British filmmaker Rob Ryan, explores the history and sustained survival of the weed-growing nuns. âIâve seen the film so many times Iâm sick of it, I didnât like it but everyone else likes it so Iâm happy about that,â said Sister Kate, 60, who resides in Merced County, California with her community of sisters. The film explores how Sister Kate and her team have fought bitterly against âwhite man ruleâ including the obstructionist country sheriff and black market thieves. âWe donât like the white man rule,â said Sister Kate, who makes and sells CBD products such as salves and oils with her sisterhood. âFarm people are very slow to adapt to new ideas, people are stuck in the 1950s with their ideas towards the cannabis plant for medicinal use.â So far Sister Kate has attempted to cure eight people of addictions using her CBD products, and she says they have all recovered. âWe have a 100 percent success rate in curing people of their addictions admittedly we donât have a huge sample size, we worked with eight people who were addicted to either alcohol, tobacco or meth, but they all got better,â said Sister Kate, who used to work as a high-flying corporate executive before turning to weed farming. Brother Dwight / SWNS

In his letter, Mr Hancock wrote: “This week, I met with two legal immigrants – one from Lithuania, another from El Salvador – who have lived here for more than two decades. They have graduated from our schools. They have paid their taxes. They are working to achieve the American dream and complying with the processes in place to become a part of our great society, but were denied naturalisation solely because of their cannabis industry employment.

“Denver understands the need for federal laws and regulations regarding citizenship and immigration, but we are seeing the heartbreaking effects that those federal laws and regulations are having on our residents. However, under current federal policy, lawful, permanent residents like the Denver residents I have met with are being denied naturalisation and may lose their legal status based on their lawful employment in the cannabis industry.”

The war on drugs has disproportionately hurt communities of colour, and this is just another example of that, said Michael Collins, director of national affairs at the Drug Policy Alliance. But Mr Collins views this particular crackdown as more indicative of the Trump administration’s views on immigration than drug policy.

“Taking a step back, this has nothing to do with cannabis – this has to do with this administration never passing up an opportunity to prosecute immigrant communities,” Mr Collins said. “They see cannabis as a ripe opportunity for persecuting these individuals.”

Seth Rogen announces launch of cannabis company Houseplant

“The Trump administration has used the war on drugs since the beginning to go after migrant populations,” Mr Collins added, pointing to President Donald Trump’s rationale that a border wall would keep drugs out of the country and his blaming of migrants for the opioid epidemic.

In an emailed statement, USCIS spokeswoman Jessica Collins said the agency is “required to adjudicate cases based on federal law. Individuals who commit federal controlled substance violations face potential immigration consequences under the Immigration and Nationality Act (INA), which applies to all foreign nationals regardless of the state or jurisdiction in which they reside.”

During the Obama administration, the federal government eased up on enforcing federal laws against marijuana, allowing states to chart their own paths on the issue. In January 2018, Jeff Sessions, while he was attorney general, rescinded that policy, arguing it was his job to enforce federal laws.

Immigration lawyers have worried about how the Trump-era drug policy would affect legal residents seeking citizenship. Kathy Brady, a senior staff lawyer with the Immigrant Legal Resource Centre, told the Associated Press she advises people to avoid work in the marijuana industry until the federal law changes.

“Even if you have had a green card for 20 years, you had better not work in any aspect of this industry and you better not use marijuana,” Ms Brady said.

In California, which starting licensing the sale and production of recreational marijuana last year, the state sent a notice in February warning non-citizens they “may suffer negative immigration consequences” if they work with marijuana.

The Trump administration has now confirmed that is true.