Replying to Ipod/laptop seizures at the border

Has anyone heard anything about a new law allowing authorities at the US border to search electronic devices for illegal content such as programs, movies and music?
I am heading to the states for vacation next month, but i am hesitant on bringing my laptop, since i have a cracked photoshop and lots of downloaded music.  And even if i dont bring my laptop, i am not leaving my ipod behind.
Apparently they can search your files under suspicion.
Has anyone ever been searched?
or even heard of this?
i found a few articles, but they are vague.