No. The environmental impact and potential disasters do not justify it. If we really want to stop complaining of rising oil prices, we need to end our dependency on oil. This pipeline would do nothing to significantly lower the price of oil and would do relatively little to benefit us.
It is purely a political favor to Canada.
no. there is not much in it for the USA- a few permanent jobs and the equivalent pollution of 40+ coal plants, let alone risk of spills of pretty dirty stuff (ask Arkansas)
yes, anything to get some jobs made.
No, of course not. There aren’t many part term, and no longterm jobs associated with this. Too, the oil will not be used in the US.