A leading U.N. investigator says the U.S. practice of interrogating prisoners and using counterterrorism laws to limit immigration are both likely violations of international law. In a new report to the U.N. Human Rights Council, the U.N. rapporteur on rights in countering terrorism, Martin Scheinin, says U.S. interrogation practices amount to a form of torture or inhumane treatment. Scheinin also criticized U.S. laws including the 2001 PATRIOT Act for what he says is an untenable expansion of the definition of a terrorist act.