This means that even going from, say, Vancouver to Los Angeles International Airport (LAX) is risky - even though LAX recently announced that passengers are permitted to travel with small amounts of marijuana.
Festivities erupted throughout the nation as Canada became the largest country on the planet with legal marijuana sales.
In the run-up to legalization, cannabis companies have been on a tear, as companies struck corporate deals while others went public creating an investor frenzy.
But legal weed prices may not remain much higher than black market prices for long, if price trends in other legal markets are any indication. "Everyone 19 (years) or over welcome".
In Ontario, Canada's most populated province, 38,000 orders for weed worth about $750,000 (£440,850) were processed in the first few hours on Wednesday, while in neighbouring Quebec 42,000 orders were processed in-store and online, smashing all expectations.
In British Columbia - where many unlicensed dispensaries have asserted that they have no intention of shutting down under the new legal regime - weed is priced between $6.99 and $13.99 per gram, excluding tax.
It's an ironic situation for a province long renowned for the quality of its bud and for cities that have taken a laissez-faire attitude toward storefront sales.
Semeniuk, 67, said he is a retired labourer with arthritis and lives on a tight pension.
"I'm confident that, quite frankly, we've done our job and we will continue to do our job", said Organized Crime Reduction Minister Bill Blair.
For now, cannabis can only be purchased through the government-run online portal, and Fedeli noted that any orders placed through the site would not yet have been delivered.
"The last time Canada was this far ahead in anything, Alexander Graham Bell made a phone call", said Linton. Ontario won't have any brick-and-mortar stores until next year. But don't try it in: Saskatchewan, Manitoba, Newfoundland and Labrador, New Brunswick, Nova Scotia, Prince Edward Island or Yukon.
A woman waves a flag portraying a marijuana leaf to celebrate National Marijuana Day on Parliament Hill in Ottawa on April 20, 2016.
Yes, even if you are flying into a state where it is legal, such as Colorado. "All of that sophistication is about to be blown out of the window by a tidal wave of Budweiser-grade cannabis". As of today, illegal operators face significant fines, and they will not be granted licenses to participate in the legal market.
"The world trusts Canada to be a leader in this", he said. Over 100 people braved the cold and wind in the province's capital St. John's, lining up outside a Tweed-branded store owned by Canopy Growth Corp., the world's most recognised cannabis producer. "We're doing it because we know it's not good for our children", Mr Trudeau said.