A sporting goods chain with stores in Idaho says it's suspending sales of modern rifles nationwide because of the school shooting in Connecticut.  Dick's Sporting Goods also says it's removing all guns from display at its store closest to Newtown, where the massacre took place.  A statement posted on Dick's website expresses sympathy for the victims' families. It says sales of modern sporting rifles will be suspended during "this time of national mourning."  Dick's declined to answer questions about how long the suspension would last or which weapons were being pulled.  Pittsburgh-based Dick's Sporting Goods Inc. has more than 500 stores in 44 states.