There are thousands of miles of pipelines already in existance, and yeas , leaks happen occasionally, here in Canada aswell, but overall a safer, cleaner and economic method of transport, we don't need another Lac-Mégantic. The estimate was 1000 jobs lost on the US side during the construction phase, they know this cuz it's not their first pipeline. Same amount of jobs lost here in Canada. The oil is still being transported via rail.