What’s the Easiest Way To Get Videos From Photos Into iMovie?

I want to import a selection of videos from Photos into a new iMovie project and find it far more complicated than expected. If I select the Photos Libraries under Project Media, I only find a slimmed down selection of albums and images. The search doesn’t seem to search on Album Names either. The other way that Apple suggests is to select and drag from Photos into the iMovie timeline. But that only seems to work for photos, not videos.
Either way, getting videos from Photos into iMovie seems like it should be a much easier process and I can’t help thinking that I’m just missing something. On the iPhone, it’s very simple to open a video in iMovie.
I’m trying to quickly get a “How-to” video assembled for upload to the web. I shoot several clips on the iPhone and then want to combine them in iMovie and export/upload to WordPress without a lot of exports/saves/imports/exports, etc.
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Paul Einarsen