It seems as though the US prioritizes shit-developers/wannabe-engineers over experienced Canadian developers. Which kind of makes sense, in that you feed your own before feeding your neighbour.
So I really doubt that H1B flooding is a thing. Open to debate though.
http://www.nytimes.com/2015/11/11/us/large-companies-game-h-...
"Many of the visas are given out through a lottery, and a small number of giant global outsourcing companies had flooded the system with applications, significantly increasing their chances of success. While he had one application in last year’s lottery and lost, one of the outsourcing companies applied for at least 14,000."
A quick fix would be to award H1B based on salary instead of lottery.