Their position on marijuana is hardly the only difference between Canada's prime minister and the president-elect of the United States.

But when Justin Trudeau's government introduces legislation to legalize cannabis this spring, it could spark problems between Canada and the U.S., particularly since Donald Trump has indicated he will keep pot illegal at the federal level.

Here's a look at what could change in Canada-U.S. relations once Canadians start lighting up legally.

Border control

Len Saunders, an immigration lawyer in Blaine, Wash., predicts a boom in his business after Canada legalizes marijuana -- though it's one he has a hard time feeling happy about.

Critical op-ed argues that if the industry is actually so nervous about Jeff Sessions, it should oppose his appointment.

On Friday, avid cannabis journalist Alex Halperin published a scathing critique of the pot industry’s post-election posture at Slate. He contends that despite the legal weed sector’s professed anxiety and handwringing over President-elect Donald Trump’s nomination of Sen. Jeff Sessions for U.S. Attorney General, it’s not really doing anything to try and stop it, even though the ballooning industry now has more clout than ever with the political establishment.

The soon-to-come legalization of marijuana in Canada will mean new business opportunities for enterprising growers, distributors and investors across the country, and with the recommendations now in from the Task Force on Cannabis Legalization and Regulation, the provincial and federal governments are now left to figure out how best to promote and regulate the new market.

Nevada’s cannabis industry wants to be tested.

Hoping to avoid the pitfalls seen in other states that have legalized marijuana, several in Nevada’s marijuana industry want the state’s stringent testing of medical marijuana products to be carried over to the recreational market. Doing so is essential to protecting the consumers, they say, as well as the industry.

“We need to make sure this product is safe. And the only way to make sure it’s safe is to test it,” said Kelly Zaug, lab manager at DV Labs in Las Vegas, during a Las Vegas Medical Marijuana Association panel discussion Thursday.

Aurora Cannabis Inc has backed off its November highs and is consolidating before we making another run again. This comes as we’ve seen across the board profit taking in the entire cannabis space. We at Insider Financial believe that Aurora Cannabis at current levels represents a discount entry opportunity for investors that have not yet gotten on board the Canadian cannabis train.

Canada is the hottest country right now for cannabis investors as it has the most favorable regulatory environment for cannabis in the world. With the election in the US of President-elect Donald Trump and his appointment of marijuana opponent Senator Jeff Sessions as Attorney General, investors are looking towards the Great White North for a more certain future.

As California prepares for the era of legal marijuana, Israel is emerging as a potential overseas partner in new cannabis-related enterprises.

As a report in Sunday’s New York Times notes, Israel has been a leader in medical research into the benefits of marijuana, and is currently conducing more clinical trials than the United States, which one Israeli expert called “ridiculous.” With California and other jurisdictions legalizing marijuana cultivation, Israel is moving to expand it abroad.

Cannabis activist and his wife, Jodie Emery, were arrested after opening shops in defiance of pot laws.

The man known as Canada's "Prince of Pot" says he's "feeling good" after spending a night in a Montreal jail. 

Marc Emery, who operates an illegal chain of marijuana shops under the name of "Cannabis Culture," was arrested along with nine others on Friday evening during a series of raids by Montreal police. 

Police were targeting six new Cannabis Culture locations that had just opened the day before. 

Emery, who was working at the store on Mont-Royal Avenue, is now charged with drug trafficking, possession for the purpose of trafficking and conspiracy.

Will Gaudet was born into the cannabis industry. A Berkeley native, he grew up watching his father’s passion for growing marijuana. But now, 25, he has decided not to follow in his father’s footsteps as a cultivator, and instead, start his own cannabis startup company.

“I believe that if I am going to do anything about changing the industry that I love, I need to start where the most money is being poured into,” Gaudet said. “And it’s not being poured into growing. It is being poured into the tech that will be able to revolutionize the way the cannabis industry is.”

MassRoots, a technology platform for the cannabis industry, announced last week it entered into a definitive agreement to acquire DDDigtal, otherwise known as Whaxy and Cannabuild, for $100,000 cash and 2,926,830 million shares of MassRoots’ common stock.

In a press release, MassRoots said that, since Whaxy launched its menu management and online ordering platform in May for licensed cannabis businesses, it has processed more than $5 million in volume across 40,000 unique transactions.

She's the Australian icon who dotes on her only daughter in private and public life.

But now Olivia Newton-John, 68, is allegedly feeling betrayed by Chloe Lattanzi, 30, because the loan she gave her to set up a new life is being used to fund a marijuana farm.

As DailyMail.com first reported, Chloe and her fiance James Driskill are building a cannabis business in Oregon using money Olivia gave them.

It was reported that the loan was to buy land to build a home on and Olivia allegedly feels betrayed her daughter is using it for a very different purpose, according to Australian magazine New Idea.

'Olivia's under the impression she's helping Chloe and James get a good start to their life, but growing weed is not what she had in mind,' a family insider said.