In the United States, a Canadian woman by name Pascale Ferrier, is serving a 22-year sentence for sending poison-laced letters to numerous people, including then-President Donald Trump.
Pascale Ferrier, 56, admitted using biological weapons in a plea deal in January.
In September 2020, the White House received a warning about a potentially lethal letter intended for Mr Trump.
Ferrier expressed sadness to the court that she "couldn't stop Trump" and that her strategy had ultimately failed.
During her lengthy presentation to the court, she insisted that she was not a terrorist but rather an activist.
"I want to find peaceful means to achieve my goals," Ferrier said.
The letter urging Mr Trump to withdraw from the presidential run had been proven to contain her fingerprints by the FBI.
According to the FBI charge filings, she wrote, "I found a new name for you: 'The Ugly Tyrant Clown.'"
Ferrier was given a sentence of 262 months in jail by District Judge Dabney Friedrich. If she returns to the United States after serving her term, she will be subject to permanent surveillance.
Ferrier's conduct was "potentially deadly," as judge Friedrich informed her, and "harmful to you, harmful to society, and harmful to the potential victims."
Similarly contaminated letters were sent by Ferrier to eight Texas law enforcement authorities, he said.
According to a statement released by the United States Department of Justice in 2019, she was jailed in the state for almost 10 weeks for unlawfully carrying a weapon and driving without a valid license, and she blamed those officials for her confinement.
In September of the year 2020, French-Canadian dual citizen Ferrier was detained upon entering the United States via the Buffalo, New York border. She had a firearm, a knife, and several extra magazines on her person.
She eventually claimed that she had created the ricin at her house in Quebec and enclosed it with the letter; ricin is a poison created from the byproducts of processing castor beans.
Unfortunately, ricin has no known treatment. The US Centers for Disease Control and Prevention report that deaths can occur between 36 to 72 hours after exposure, depending on the dose.
A man from Mississippi was given 25 years in prison in 2014 for sending ricin-laced letters to high-ranking government officials, including President Barack Obama.
