By Colin R. Singer ( June 30, 2025, 4:29 PM EDT) -- Canada’s impaired driving laws are among the strictest in the world for the threshold of blood alcohol concentration that can trigger criminal inadmissibility under our justice and immigration laws. The legal blood alcohol concentration (BAC) threshold for impaired driving is 0.08 per cent and has significant and potentially harsh consequences for both permanent residence holders and temporary immigration applicants. A single conviction for impaired driving under the Criminal Code is treated as “serious criminality” rendering an applicant inadmissible to Canada under Canadian immigration law....