Juneau Empire-AP, by Becky Bohrer.  A Senate proposal to overhaul Alaska’s oil tax structure could cost the state up to $1.3 billion next year, hundreds of millions more than plans put forth by Gov. Sean Parnell and a different Senate committee, according to an analysis released Wednesday.   Sens. Lyman Hoffman and Click Bishop laughed as an economist began discussing the potential impact of the Senate Finance Committee’s rewrite of SB21 on state revenue and the operating budget. Hoffman, D-Bethel, later called the numbers “staggering” and said they would have a [...]