§ 223 (8 USC 1203) Reentry permit
Any alien lawfully admitted for permanent residence, or
any alien lawfully admitted to the United States pursuant to clause 6 of section 3 of the Immigration Act of 1924, between July 1, 1924, and July 5, 1932, both dates inclusive, who intends to depart temporarily from the United States may make application to the Attorney General for a permit to reenter the United States, stating the length of his intended absence or absences, and the reasons therefor. Such applications shall be made under oath, and shall be in such form, contain such information, and be accompanied by such photographs of the applicant as may be by regulations prescribed.
Issuance of permit; nonrenewability
If the Attorney General finds
that the applicant under subsection (a)(1) of this section has been lawfully admitted to the United States for permanent residence, or that the applicant under subsection (a)(2) of this section has since admission maintained the status required of him at the time of his admission and such applicant desires to visit abroad and to return to the United States to resume the status existing at the time of his departure for such visit,
that the application is made in good faith, and
that the alien's proposed departure from the United States would not be contrary to the interests of the United States, the Attorney General may, in his discretion, issue the permit, which shall be valid for not more than two years from the date of issuance and shall not be renewable. The permit shall be in such form as shall be by regulations prescribed for the complete identification of the alien.
During the period of validity, such permit may be used by the alien in making one or more applications for reentry into the United States.
Presented and surrendered
Upon the return of the alien to the United States the permit shall be presented to the immigration officer at the port of entry, and upon the expiration of its validity, the permit shall be surrendered to the Service.
Permit in lieu of visa
A permit issued under this section in the possession of the person to whom issued, shall be accepted in lieu of any visa which otherwise would be required from such person under this chapter. Otherwise a permit issued under this section shall have no effect under the immigration laws except to show that the alien to whom it was issued is returning from a temporary visit abroad; but nothing in this section shall be construed as making such permit the exclusive means of establishing that the alien is so returning.