SAN FRANCISCO — Election-year politics and a split between a Republican Congress and a Democratic White House means no major tax issues will be settled during the balance of this year, according to a Washington-based tax lawyer.“For federal taxes, the current climate is characterized by many proposals but little action. The surplus will continue but it is an election year,” Robert Pitcher said during a June 20 speech at a convention of finance officers in trucking.Pitcher practices tax law for Zuckert, Scoutt & Rasenberger. Before that, he worked for American Trucking Associations in the State Laws Department for