SOPA and PIPA would help how? This appears successful without them.
Edit: Leaving the original text so as not to confuse the conversation. Megaupload is a foreign (to the US) site with a US TLD, not a US-domestic site. The arrests were made around the globe, but mostly in New Zealand. The FBI may have initiated the indictment, but extradition applies, as does the Berne Convention. SOPA and PIPA are intended to address issues with foreign-hosted sites being used by Americans to pirate…
Also there were pretty high profile domain seizures done in two bouts over the last two years. ICE/DOJ seized domains (google it) - some of those were foreign based but with .com or .net. (I don't recall if any were foreign TLDs) There already doing anything they want anyway - and happily ignoring any due process - codifying these actions into law with PIPA/SOPA is just the icing on the cake.