A proposed ban on the use of cannabis brand elements on T-shirts and other swag would make it more difficult to stamp out the black market after legalization and have "significant" unintended consequences, licensed producers said Monday.

The Senate is set to make a final vote Thursday on an amended Bill C-45 before it goes back to the House of Commons for approval. The amendments include one that would prohibit the use of cannabis brand elements on promotional items that are not marijuana or marijuana accessories.

From "a made in Canada approach," to "joints in the toaster oven," here are some memorable snippets and commentary of note on Bill C-45 and the federal plan for legalized marijuana:

"We are choosing to legalize marijuana because the current system is failing Canadians… Everywhere around the world people are grappling with a failed war on drugs. People are very interested with the leadership that Canada is showing in terms of figuring out how to better protect our kids and pull away the profits from criminals and organized crime." -- Prime Minister Justin Trudeau in the House of Commons, May 10, 2017.

The bill to legalize recreational marijuana in Canada is up for a crucial vote at the last step in the legislative process this week, with uncertainty looming over what the final wording of the law will be.

Senators are set to vote on Bill C-45, the Cannabis Act, at third reading in the Senate on Thursday, after studying it for six months. For those planning to follow the vote that day, rest up as it’s possible the vote could not happen until midnight. It could also be much earlier, but entirely depends on how many senators want to speak to the bill that day. Midnight would be the latest possible, as all sides agreed to vote on the bill by June 7 at the latest.

In just five days, Canada's Senate could alter the face of the legal cannabis industry throughout the world with its vote on bill C-45, which is best known as the Cannabis Act. If approved by the Senate, it would pave the way for Canada to become the first developed country in the world to legalize adult-use cannabis.

Four days from now, Canada's Senate is expected to make a game-changing judgment on bill C-45, which is better known as the Cannabis Act. If passed by the Senate, which is widely expected to happen, the Cannabis Act would be one step closer to becoming law and, in the process, legalizing adult-use marijuana for Canadians.

In becoming the first developed country in the world to legalize adult-use weed, Canada could be opening the door to $5 billion in added annual sales. This would come atop what the industry has already been generating from medical weed sales, as well as exports to countries where medical marijuana is legal.

The blunt truth about pot stocks

Bob Kay feels a twinge of fear every day as he runs his business in Kelowna, B.C., but he charges forward knowing he’s helping people ease their pain.

For the past 10 years Kay has been operating a medical marijuana dispensary “in a legal limbo,” running the risk of a police raid as the country prepares for the legalization of recreational pot this summer.

Be Kind is a “compassion club,” he says, helping those with chronic pain and providing cannabis in various forms to those who are prescribed it through a health practitioner.

Viewers can go inside the operation as it’s featured in the new docu-series “Bud Empire,” premiering Tuesday on History.

Marijuana businesses are growing in size and scope as Canada moves toward legalization of recreational pot, creating an increasingly daunting job for those tasked with enforcing the rules.

In Vancouver's bustling downtown, sleek, modern posters with fashionable fonts and simple images are plastered on lamp posts. It's not until you take a closer look that you spot the rolled joints inside a sandwich or buds among a plate of broccoli.

"Weed delivery. Simplified," the posters read.

Once an underground industry, marijuana delivery services are now advertising publicly, joining unlicensed retail stores and online shops as cannabis businesses openly skirting the existing law.

This Thursday, Canadian Senators will make the final vote on the Cannabis Act. If passed, recreational cannabis will become a legal substance across the country soon after, or it could face even more delays, writes Calvin Hughes.

It would apply only in limited circumstances, says MP Bill Blair.

The Trudeau government has been looking into making drug testing mandatory in selected workplaces in connection with its cannabis legislation.

MP Bill Blair, the government's point person on the file, told CBC Radio's The House on Thursday that people in safety-sensitive jobs — like pilots — could be subjected to mandatory testing in the future.

"We examined very closely what we could do as far as testing when there was a bona fide safety requirement," he told host Chris Hall.

"In those very limited circumstances, it's possible."

The Senate has once again amended Bill C-45, which will legalize cannabis for recreational use, setting up a potential showdown with the House of Commons over key provisions in the proposed legislation.

A Senate committee adopted 40 amendments to the bill this week, including a contentious one that would allow provinces such as Quebec and Manitoba to prohibit the home cultivation of cannabis.

On Friday, the Senate voted to prohibit any promotional material that is branded by cannabis producers, such as t-shirts and hats. The amendment was proposed by Conservative senator Judith Seidman, and it passed 34-28 with the support of 10 independent and unaffiliated senators.