Oh, so that's what's been happening to the honeybees...

Doesn't America have its own native bees?

I live in a different country, I don't really know. But CCD is just as much of a problem here in the UK, where honeybees are a native species.

IIRC, all of the above mentioned things are considered to be possible causes of CCD, but they really haven't been able to narrow it down to a single factor with any near-absolute certainty.

My dad is/was a beekeeper, and CCD was one of the things that really killed his business. It was a pain in the ass to keep having to buy new queens/swarms every year or so. The only colonies that really held up were the wild-caught swarms he managed to grab, but those were few and far between. Even with those, every now and then there was a sneaky little skunk or the occasional black bear that decided to sample the wares and not even leave a tip.

So the wild critters are sticking around? Hm, that's interesting data.

Doesn't America have its own native bees?

I'm pretty sure that bumble bees are native, but don't quote me on it.

A lot of crops here we grow aren't native, so I don't see why arguing honeybees not being native is a valid line of discussion. It is the easiest and best pollination vector for the crops in question so preventing CCD is important. EPA may or may not cause CCD but it kills honeybees regardless.

America probably had its own native bees, but now lacks them in sufficient quantities to actually pollinate.

There are quite a few native bee species, but none of them are especially numerous. The best pollinators of them all are probably the Osmia genus, but unfortunately they don't live in dense populations like honeybees do, and to my knowledge they don't produce honey.