Reuters - The Idaho state legislature approved a bill on Tuesday to strip public school teachers of many of their collective bargaining rights while protesters in six states rallied against Republican efforts to curb union power.<p><strong>Read more:</strong> <a class="rssreadon" rel="external" title="Idaho passes Republican bill to curb union rights   (Reuters)" href="http://us.rd.yahoo.com/dailynews/rss/topstories/*http%3A//news.yahoo.com/s/nm/20110309/pl_nm/us_states_unions" target="_blank">http://us.rd.yahoo.com/dailynews/rss/topstories/*http%3A//news.yahoo.com/s/nm/20110309/pl_nm/us_states_unions</a></p>