You basically got it. European honey bees consume the already dwindling nectar and pollen resources for North American native pollinators. Furthermore, European honey bees are also worse at actually pollinating North American flowers because they did not co-evolve with the species we have here.
Honest question: how do the typical bees (the big ones used for honey production) negatively affect native bee populations? Competition for polen?
You basically got it. European honey bees consume the already dwindling nectar and pollen resources for North American native pollinators. Furthermore, European honey bees are also worse at actually pollinating North American flowers because they did not co-evolve with the species we have here.