There is no such thing as an unlimited right to anything. Go print some kiddie porn, or start a religon that requires ten year old marriages, or ask a guy in prison if he has the right to liberty. You'll get in jail or a quick NO, in a hurry.
Apparently, the SCOTUS disagrees: http://www.foxnews.com/politics/2010/01 ... y-dispute/
As nearly as I can tell, this means the only limits to what will be poured into the elections are what the richest corps want to spend on it. If my company, a govt contractor, wants to put 30 mil into ads supporting the guys responsible for awarding the contracts, that's fine. Good grief.
The last election was bad enough. The next one will be utter chaos.