CALIFORNIA. Congresswoman Ellen Tauscher (D) was tapped this week to serve in the Obama Administration as US Undersecretary of State for Arms Control and International Security -- the Administration's top arms control negotiator. The centrist Tauscher -- who represents the CD-10 district which includes the Lawrence Livermore National Laboratory nuclear weapons/WMD research and development facility --- has been recognized as an expert on nuclear weapons issues during her seven-terms in Congress. "Keeping nuclear weapons out of the hands of terrorists, making sure other countries do not obtain them and, one day, I hope, ridding the world of these terrible weapons,...