i think not, but there are arguments and decisions that can support both sides of the question
eventually, if congress ever passes a law about it, scotus will have to decide
http://news.yahoo.com/constitution-check-political-donors-remain-anonymous-093406715.html
eventually, if congress ever passes a law about it, scotus will have to decide
http://news.yahoo.com/constitution-check-political-donors-remain-anonymous-093406715.html