I assume the federal certificate is with Canada, and not the US, so it very well may be easier to obtain.
Also since the pipeline will be between Alaska, and a enterprise with a Canadian firm, it does not constitute interstate commerce so in theory our Congress has no jurisdiction. At least I hope that is the case... Congress is THE impediment to energy development.
No, this pipeline will require permits and tarrif approvals by FERC. More information available at:
http://media.adn.com/smedia/2008/07/23/01/AkPIRG_Report_on_AGIA.source.prod_affiliate.7.pdf