I’m pretty sure this will never hold up because the Constitution protects freedom of movement. Even if it passed because Idaho’s representatives are wackos, higher courts would shut it down. Copied from Wikipedia:

The U.S. Supreme Court also dealt with the right to travel in the case of Saenz v. Roe, 526 U.S. 489 (1999). In that case, Justice John Paul Stevens, writing for the majority, held that the United States Constitution protected three separate aspects of the right to travel among the states:

(1) the right to enter one state and leave another (an inherent right with historical support from the Articles of Confederation),

(2) the right to be treated as a welcome visitor rather than a hostile stranger (protected by the "Privileges and Immunities" clause in Article IV, § 2), and

(3) (for those who become permanent residents of a state) the right to be treated equally to native-born citizens (this is protected by the 14th Amendment's Privileges or Immunities Clause; citing the majority opinion in the Slaughter-House Cases, Justice Stevens said, "the Privileges or Immunities Clause of the Fourteenth Amendment ... has always been common ground that this Clause protects the third component of the right to travel.")