The frustrated politicians who called for a federal investigation into Chicago's off-the-books police warehouse have renewed calls for the first official inquiry into the facility. Danny Davis, the US congressman who represents the home district of Homan Square, said he would personally seek ... to learn the rationale" for a practice of holding Americans without a public record of their whereabouts or access to a lawyer while interrogating them at the police site, known as Homan Square. On Wednesday, the Guardian revealed the initial results of a transparency lawsuit it filed to uncover the extent of Homan Square's emergence as what ex-detainees, lawyers and activists describe as the domestic equivalent of a CIA black site. The lawsuit compelled the Chicago police to disclose that over 3,500 people - 82% of whom a Guardian independent investigation found to be black - have been subject to detention at Homan Square, with only three documented visits from lawyers to the building since September 2004. Long-time Chicago civil rights lawyers [responded to the lawsuit] as the "extremely troubled" results of a city with a "fundamentally racist" history of law enforcement. "Police assassination of Black Panther leaders, the torture of scores of African American suspects, the police 'red squad' spying indiscriminately on black citizens, and now Homan Square," said attorney Flint Taylor, who played a major role in pushing the city to creating a reparations fund earlier this year.