The proposed bill introduces a new chapter, Chapter 90, to Title 18 of the Idaho Code, titled the "Immigration Cooperation and Enforcement Act." This chapter establishes various definitions related to immigration, including terms such as "alien," "illegal alien," and "dangerous crime." It outlines offenses related to illegal entry and reentry into the state, specifying that such violations can be classified as misdemeanors or felonies depending on the circumstances. The bill also details the responsibilities of law enforcement officials in relation to immigration enforcement, including the authority to maintain information on the immigration status of individuals and to cooperate with federal authorities.

Additionally, the bill includes provisions for the trafficking of dangerous illegal aliens, sentencing enhancements for individuals convicted of dangerous crimes who have been previously deported, and conditions for the release of illegal aliens from confinement. It mandates that custodial authorities notify the Department of Homeland Security (DHS) when a foreign national is confined and prohibits the release of illegal aliens until their sentences are completed unless specific conditions are met. The bill asserts that law enforcement officials acting in good faith under this chapter will have immunity from liability and emphasizes that immigration status cannot be used as a basis to abate prosecution. The act is declared to be an emergency measure, taking effect immediately upon passage and approval.