One of the best places to learn about ebike laws by state is Wikipedia. In my experience it stays fairly up to date and provides great sources. Check it out here: https://en.wikipedia.org/wiki/Electric_bicycle_laws
Generally speaking, the US lumps anything with a 750 watt or less motor and 20 mph or less top speed into the "bicycle" category which does not require a license or insurance and may be ridden in bike lanes.
Generally speaking, the US lumps anything with a 750 watt or less motor and 20 mph or less top speed into the "bicycle" category which does not require a license or insurance and may be ridden in bike lanes.