Actually, the ability of recent immigrants to integrate has been declining relative to prior cohorts, as illustrated by a 2014 internal federal government study that was eventually made public via an access to information request (link below). Even the federal government, which under different parties has supported large-scale immigration for three decades, is apparently aware that serious problems exist. I believe we should examine the entire system to determine the measures required to fix the immigration and refugee programs, the rationale for which in both cases is increasingly grounded more in ideology and identity politics than in objective evidence. The consequence of not doing so is to incur escalating costs, which at some point will surely entail a backlash. 

http://vancouversun.com/opinion/columnists/douglas-todd-canada-struggling-to-absorb-immigrants-internal-report-says