People facing Idaho entry or reentry charges can use federal permission to stay as a defense, with enforcement tied to another suspected crime.
Adult noncitizens can face Idaho entry charges after U.S. entry that violates specified federal laws. Police must suspect a separate crime, and federal permission to stay can provide a defense.
People facing Idaho reentry charges can defend themselves by showing that federal officials expressly allowed their entry or presence, or granted permission to remain.
Police can enforce these immigration offenses only while investigating or detaining someone for a separate suspected crime. Judges cannot delay deciding guilt or withhold formal judgments in these cases.
The entry offense covers adults who knowingly enter or try to enter Idaho, or are present there, after entering the United States in violation of 8 U.S.C. 1324(a)(1) or (a)(2). The entry offense applies to noncitizens age 18 or older. A first conviction is a misdemeanor; later convictions are felonies. A federal conviction is not required; acts that violate the named federal provisions also count. Federal permission to remain under federal immigration law or another federal law provides a defense against conviction. A separate defense applies if the person was not investigated for, charged with, or convicted of the separate crime that prompted the detention or investigation. These provisions took effect on July 1, 2026.
People charged with illegal reentry can use federal permission as a defense against conviction. The reentry offense covers noncitizens who enter, try to enter, or are found in Idaho after being denied admission, excluded, deported, or removed from the United States, or leaving while such an order was outstanding. Express consent must come from the U.S. attorney general or the secretary of the U.S. Department of Homeland Security. Alternatively, the federal government must have granted permission to remain under federal immigration law or another federal law. These provisions took effect on July 1, 2026.
Police can enforce the entry and reentry offenses only during detention or investigation for a separate suspected crime. These rules apply to Idaho’s illegal entry and illegal reentry offenses. The separate suspected crime must fall under Idaho’s criminal code outside this immigration chapter, or its drug crime chapter. People charged with or convicted of either offense cannot receive deferred adjudication, which delays a decision on guilt, or a withheld judgment, which withholds formal entry of judgment. For either offense, a defense applies if the person was not investigated for, charged with, or convicted of the separate crime that prompted the detention or investigation. These provisions took effect on July 1, 2026.
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