On November 20, 2014 the ACLU of Arizona together with the ACLU of San Diego and filed a federal lawsuit on behalf of local residents of Arivaca, Arizona challenging U.S. Border Patrol’s obstruction of efforts to monitor abuses at an interior checkpoint near the town of Arivaca. The lawsuit asserts that Border Patrol has infringed and restricted First Amendment rights by threatening plaintiffs with arrest for engaging in constitutionally protected speech while they monitor activities of Border Patrol at the checkpoint. Plaintiffs’ motion for a preliminary injunction to halt the Border Patrol’s checkpoint practices was denied in September 2015. Defendants’ filed a motion to dismiss in November 2015. Plaintiffs’ filed their reply to that motion on April 27, 2016.