The growing number of Canadian citizens detained by U.S. Immigration and Customs Enforcement is disturbing and raises questions about whether Ottawa is doing enough to ensure the well-being of Canadians in custody, experts say, after revelations that Canadian children as young as two years old have been held for weeks in immigration detention this year.

The Globe and Mail on Thursday published extensive analysis of American enforcement data revealing that 149 Canadian citizens have been held at some point in ICE custody since January, when President Donald Trump took office and ordered an expansive immigration crackdown.

At least two Canadian toddlers have been held in U.S. Immigration and Customs Enforcement custody this year, including one who was detained for 51 days, more than double the legal detention period for migrant children in the United States, a Globe and Mail analysis of American enforcement data show.

The children, who are under the age of four, were both detained at a remote Texas facility that has been the subject of a legal complaint alleging inadequate access to safe drinking water, medical care and legal assistance. At the time of detention, they appear to have been accompanied by adults who were also apprehended.

When police in England raided a fentanyl lab outside the northern city of Leeds in early 2017, the bust sent shockwaves across the country.

The raid and subsequent conviction of three men – who made and sold around £164,000 worth of the opioid in five months – was the first major fentanyl case in Britain and it prompted dire warnings from law enforcement officers, health officials and the media that the U.K. was headed for a U.S.-style fentanyl crisis.