Mohamedou Ould Slahi (sometimes spelled "Salahi") is a Mauritanian national who was illegally detained by the U.S. for more than 14 years. On October 17, 2016, Mr. Slahi was released and transferred back to Mauritania, where he was reunited with his family. Mr. Slahi was arrested in Mauritania in November 2001 on suspicion of ties to al-Qaeda. He was then illegally rendered by the U.S. government to Jordan, where he was detained, interrogated and abused for eight months. He was subsequently rendered to U.S. custody in Bagram, Afghanistan and finally to Guantánamo, where he was held from August 2002 until his release.

In November 2015, the ACLU filed a Freedom of Information Act lawsuit demanding the Departments of Defense, Justice, and State, and the CIA release 69 records or categories of records either referenced in the Senate Select Committee on Intelligence’s report on the CIA’s torture program or whose classification status was implicated by the report’s release. While the full 6,900-page SSCI report remains classified, the summary of the report’s findings, which was declassified and released in December 2014, describes horrific human rights abuses committed by the CIA through its post-9/11 program of rendition, detention, and torture.

The ACLU filed a lawsuit in November 2009 on behalf of Amir Meshal against four FBI agents for their direct, personal role in his unlawful detention, torture, and rendition from Kenya to Somalia and Ethiopia over a period of more than four months.

The ACLU has filed a Freedom of Information Act lawsuit seeking information about federal government programs that purport to prevent “violent extremism” but that actually cast suspicion on law-abiding Americans and unfairly target American Muslims. The lawsuit was filed in February 2016 in the U.S. District Court for the District of Columbia.

On June 11, 2013, the ACLU filed a lawsuit challenging the legality of the National Security Agency’s mass collection of Americans’ phone records. The complaint argues that the dragnet violates the right to privacy protected by the Fourth Amendment as well as the freedoms of speech and association protected by the First Amendment. The complaint also charges that the program exceeds the authority that Congress provided in Section 215 of the Patriot Act. In May 2015, the Court of Appeals for the Second Circuit ruled that the call-records program violates Section 215 of the Patriot Act. Weeks later, on June 1, 2015, Section 215 briefly expired for the first time since the passage of the Patriot Act in 2001. The next day, Congress passed the USA Freedom Act, which amended Section 215 to prohibit the bulk collection of Americans’ call records.