TLDR:

They found debugging commands that can be used to access the memory of the device over USB. This is as much a backdoor as any device that runs unsigned firmware

Unless you store secret files on your Bluetooth dongle, you shouldn’t have to worry about this.

Cartels have boats, but no one’s shipping drugs up to Canada just to smuggle them south: They just get shipped directly to the US

Trump is just making up an excuse to justify cutting off trade with Canada.

Really, the whole fentanyl thing seems like scaremongering: People do overdose on it, but you won’t die from touching it or inhaling trace quantity. It’s not even the most potent opioid known, not even close to it.