Um, what has copyright infringement have to do with homeland security? The answer is nothing. Anyway there is already a Fed agency that deals iwith those issues. FCC?
The answer is Customs (now a department of DHS) or maybe you have never had to deal with getting something you buy overseas into the country, even something you buy on a foreign vacation. The laws we already have for copyright infringement is under the juristiction of the court system where one would have to file a lawsuit in such cases. But my guess is that you have also not had to deal with international copyright infringement now have you?
The point I am making is the same as the indignation you seem to be firing blindly attempting to hit. If the government had a case, why did they not send in the district attorney? But noooooo, they just had to jump right in heavy handed without warrants and/or legal complaints to support their case with that funny little thing we call due process.