The issues were self created by skyrocketing the immigration rates / TFWs.
All they had to do was .... nothing, just keep the system as it was.
With that it seems like there has been a lot of heavy lobbying by companies built on low wage employment to deflate wages across the country. And it worked!
They rapidly expanded the LMIA program which provisions visas for primarily low income work.
Additionally they realllly expanded the international student visa pool, without actually checking who they were granting visas to.
The result was that pretty much non existent colleges were created with the sole goal of allowing people to pay for a backdoor to try and get PR without high level education, skills or even language proficiency.
Lastly there used to be a cap on visas issued based an unemployment rate of 6% they removed that cap so despite unemployment being up to around 10% in major cities they are still granting tons of visas.
So yeah... They really went out of their way to expand the visa program as fast as possible with very little oversight.
Additionally in terms of actual background checks, those seemed to go out the door as Canada in the past few years has given PR to a number of people who are actively wanted terrorists as part os Isis and other terror groups
All they had to do was .... nothing, just keep the system as it was.
With that it seems like there has been a lot of heavy lobbying by companies built on low wage employment to deflate wages across the country. And it worked!