There's a simple explanation. The stasist wing of my fellow reactionary crackpots has been warning about the possibility of Democrats registering illegal aliens to vote. They were right about that but they were wrong about which border to watch. It looks like Canadian illegals have had far more effect.
To quote from Canadian Bacon (directed by Michael Moore back when he was still funny):
The Canadians. They walk among us. William Shatner. Michael J. Fox. Monty Hall. Mike Meyers. Alex Trebek. All of them Canadians. All of them here.
Think of your children pledging allegiance to the maple leaf. Mayonnaise on everything. Winter 11 months of the year. Anne Murray - all day, every day.
Like maple syrup, Canada's evil oozes over the United States.