On April 18, the DOJ filed a brief with the U.S. District Court for the District of Columbia that supports the RIAA's case against Verizon to compel the release of personal customer data of an individual who allegedly engaged in Digital Millennium Copyright Act (DMCA) violations through file swapping. The DOJ contends the government's position is a defense of the constitutionality of the DMCA. Verizon has sought to quash the court' subpoena as it "violates the constitutionally protected rights of free speech and due process of Internet subscribers." (quote is from this New York Times article.) See also this Wall Street Journal article and this Washington Post article for more background.