Copyright is a touchy subject. It's important for artists to be able to legally protect their work, but it also isn't clear how much peer-to-peer file sharing actually damages artist revenue. There have been anecdotal reports that increased file sharing between fans has lead to increased concert attendance, and many artists skip the peer-to-peer networks and release entire albums in a "pay what you want" format. For example, In Rainbows by Radiohead was released in this manner in 2007.
Whether you think the United States copyright laws are fine as-is, or that they need to be strengthened or culled, this article discusses some of the more recent updates with the 2007 case against Jammie Thomas, who is charged with copyright infringement by uploading 24 songs to a peer-to-peer network. You can read the article here: http://www.digitalmusicnews.com/permalink/2013/20130211government