The US consumes about 20 mil bbls of oil per day and imports around 4 mil bbls per day from Canada, about 20% of US consumption. Total oil imports is about 6 mil bbls/day, with about 2/3 of imports coming from Canada.

Two fun facts: 1) the US is now the largest producer of crude oil on the planet and 2) the US exports about 4 mil bbs of oil per day. Venezuela is a distant #18 at around 1 mil bbls/day

And lastly, pretty much anything you can distil from heavy crude, you can also distil from light crude, just less of it (by volume). There's a reason tar, asphalt and such is so cheap, it's made from the distillation waste products.