There are hundreds of thousands Haitians living illegally in Dominican Republic.
They have no rights to school, medical attention, voting, marriage or travel. 
  
They provide manual labour at a price so low it is cheaper to have 10-20 Haitian do a building demolish with hammers and wheelbarrows  than  a few hours with a bulldozer.  They provide a work pool for pedophile sex tourists.

There is no refugee crisis because they have no place to go.   

Because they can not take a taxi to the Canadian border they can not file a refugee claim.

My guess is the Haitians that made it to The US and now to Canada had significantly more resources and a better life than the ones left behind.