Multiple studies demonstrate that pipeline capacity constraints and transportation bottlenecks are primary drivers behind the wider price discounts at which Canadian crude oil trades relative to U.S. benchmarks.
The claim is specific and empirically testable, passing Step 0. Papers [3], [4], and [7] specifically examine how pipeline capacity constraints lead to price differentials or discounts for Canadian (and mid-continent) crude oil relative to U.S. benchmarks. None of the retrieved papers contradict this relationship. Therefore, the verdict is SUPPORTED.