Form I-352 at a glance
What it is: The Immigration Bond is posted as security for performance and fulfillment of the bonded alien's obligations to the government.
Who signs: An obligor or co-obligor shall sign the bond where indicated in Paragraph D. Any agent of an acceptable surety company is a co-obligor on this bond, and he/she shall sign as a co-obligor in paragraph D. Failure of an agent to sign as co-obligor shall result in rejection of the bond.
An acceptable surety company or an entity or individual who deposits a certified check, a cashier's check or a money order (“cash equivalent”) may execute the bond as surety.
A filled-in Form I-352 example: a cash equivalent bond

How to fill out Form I-352, box by box
A. Obligor Information

Obligors and co-obligors (if any) shall state their full name and address in Paragraph A.
The obligor, surety, or agent must furnish its Taxpayer Identification Number (TIN) to ICE. Failure to furnish the TIN may result in a refusal of the bond.
Enter the Name of Obligor, the Taxpayer Identification Number (TIN), the Street Address of Obligor, the City, State and Zip Code, the Home Phone and the Cell Phone.
B. Information about alien for whom bond is furnished

For the alien for whom the bond is furnished, enter the Name, the Alien Registration Number or Visa Number, the Current Location, the Date and country of birth, the Nationality, the Date, port and means of arrival in the United States, the Alien to reside at, the Telephone number at alien's residence and the Email.
C. The sum of the bond

In Paragraph C, the obligor and the agent acting on its behalf (if any), upon execution of this bond, agree that they are immediately liable to the United States in the sum entered in dollars, which sum is to be forfeited and paid to the United States upon an administratively final breach determination.
Enter the facts recited: the paragraph or paragraphs herein numbered and captioned, and any rider lettered.
D. Signed this

After D. Signed this, enter the day and the (Month/Year); the obligor signs at (Signature of Obligor) and the agent at (Signature of Agent/Co-Obligor (if any)).
The obligor certifies, subject to penalties provided by 18 U.S.C. § 1001, that any cash equivalent deposited is not the proceeds of illicit activity.
More rules for Form I-352
DHS regulations provide that, upon notification of a breach, the obligor has 30 days in which to file an administrative appeal or motion for reconsideration of the breach.
If your situation is different
The bond is conditioned upon the delivery of an alien
The obligor and any co-obligor furnish the bond with the following conditions if: (1) the alien is released from custody and if the obligor and any co-obligor shall cause the alien to be produced or to produce himself/herself to an immigration officer or an immigration judge of the United States, as specified in the ”Notice to Obligor to Deliver Alien,” Form I-340, issued by ICE, upon each and every written request until removal proceedings in his/her case are finally terminated; (2) the said alien is accepted by ICE for detention or removal; or (3) the bond is otherwise cancelled, this obligation shall terminate.
If, however, the obligor or any co-obligor fails to surrender the alien in response to a demand while the bond remains in effect, the full amount of the bond (see Paragraph C) becomes due and payable upon an administratively final breach determination.
The bond is conditioned upon the voluntary departure of an alien
For the obligor to furnish this bond, (1) the obligor and any co-obligor ensure that the alien departs the United States on or before the date specified in the order granting voluntary departure, and provides probative documentation of the departure within 30 days of the date specified in the order granting voluntary departure; or (2) the alien is actually accepted by DHS for detention or removal, this obligation shall terminate.
The bond is an order of supervision bond
An order of supervision bond: if the alien fully performs all of the conditions of the order of supervision and surrenders for removal, then this obligation shall terminate; but if the alien fails to fully perform any of the conditions of the order of supervision, or the alien fails to surrender for removal, the full amount of this bond shall become due and payable by the obligor and any co-obligor upon an administratively final breach determination.
The alien remains after the temporary period of admission
The obligation shall become due and payable if the alien: (a) violates any condition of her/his status; (b) files an untimely application for change of status or extension of his/her lawful admission; or (c) remains in the United States after expiration of the temporary period of admission or, if the alien timely and properly files an application for change of status or extension of her/his lawful temporary stay, the alien does not depart the United States within 10 days after denial of such request.
Surety Company, Agent-Bonding Company or Obligors-Cash Equivalents
Under F, enter the EIN for the Surety Company, the EIN for the Agent-Bonding Company and the Taxpayer Identification Number (TIN) for Obligors-Cash Equivalents.
Common questions about Form I-352
Is there a deadline?
For bonds posted by acceptable surety companies, if the surety company or agent does not make payment within 120 days of the demand for payment, DHS may notify Treasury of such nonpayment.
Sources
[1] ICE Form I-352 (11/23), Immigration Bond, U.S. Immigration and Customs Enforcement (the Official source link on this page).


