I. Introduction

Consider this common scenario to many family law practitioners: a client arrives for a consultation about enforcing a divorce decree years after the marriage was dissolved. The former spouse, a foreign national who obtained lawful permanent residence through the marriage, is now threatening to sue in federal court. However, the basis of the claim is not property division or alimony, but a federal form signed years earlier, as part of the immigration process. The form is I-864, also called the Affidavit of Support.

For practitioners outside immigration law, the Affidavit of Support might be an unfamiliar instrument. For those within it, it is a routine filing. What neither group always appreciates is that the I-864 is not just a form in the bureaucratic sense. It is a legally enforceable federal contract, and it creates obligations that do not dissolve with the marriage, the relationship, or the passage of time.

What most sponsors do not understand at the moment of signing is that the I-864 actually creates two distinct obligations. The first runs to the U.S. government, which retains the right to seek reimbursement from the sponsor if the immigrant receives public benefits. But there is also a second obligation to the sponsored immigrant, who holds an independent right of action, enforceable in federal court without exhausting any administrative process. The sponsor, in other words, signs a binding promise to two separate creditors simultaneously, one institutional and one personal, and the law treats both with equal seriousness.

Law practitioners may encounter the I-864 not as immigration attorneys but as collateral participants: family lawyers negotiating divorce settlements, estate planners advising sponsors, and civil litigators facing unexpected federal claims.

II. Statutory and Regulatory Foundation

The Affidavit of Support is governed by section 213A of the Immigration and Nationality Act, codified at 8 U.S.C. § 1183a[i]. The requirement that sponsors execute a legally enforceable affidavit was introduced by the Illegal Immigration Reform and Immigrant Responsibility Act of 1996, which replaced what had previously been an unenforceable moral commitment with a binding contractual obligation[ii]. Since 1996, submission of a completed and approved I-864 is mandatory for most family-based immigrant visa petitions and for certain employment-based petitions where the petitioner is a relative of the beneficiary.

The substance of the obligation is straightforward. The sponsor agrees to maintain the sponsored immigrant at an income level not less than 125 percent of the applicable federal poverty guidelines. The obligation is not capped at a fixed dollar amount; it adjusts annually as poverty guidelines are updated. If a sponsor lacks sufficient income to satisfy the threshold, they may contribute income of household members (who will be required to execute Form I-864A) or present a joint sponsor to execute a separate I-864. In that situation, the household members or joint sponsor assume the same full and independent obligation as the primary sponsor.

III. The Nature of the Obligation

The Affidavit's most consequential feature is the identity of the parties who may enforce it. The statute expressly provides that the sponsored immigrant qualifies as a third-party beneficiary of the agreement between the sponsor and the federal government[iii]. This means the immigrant may bring a direct civil action against the sponsor in any federal district court or in a state court of competent jurisdiction, without first seeking administrative relief or exhausting any government process.

The Seventh Circuit addressed the contractual character of the I-864 directly in Liu v. Mund, a suit brought by a sponsored immigrant spouse against her American citizen ex-husband to enforce support obligations. The court rejected Mund’s argument that Liu had a duty to mitigate her damages by seeking employment before enforcing the support obligation. Judge Posner confirmed that the affidavit is an enforceable contract and exists independently of whatever rights the immigrant may or may not have under state divorce law, and that neither the statute nor the affidavit imposes any duty of mitigation on the sponsored immigrant[iv].

The Ninth Circuit reached a similar conclusion in Erler v. Erler, affirming federal jurisdiction over an I-864 enforcement claim arising out of a post-divorce dispute[v]. These decisions reflect a consistent judicial understanding: once the I-864 is signed and the visa is issued, the sponsor has entered a federal contract, and the immigrant holds the right to sue on it.

The measure of damages in a private enforcement action is the difference between the immigrant's actual income and 125 percent of the poverty guideline for the relevant household size[vi]. Courts have also awarded attorney's fees to prevailing immigrants in appropriate cases, making the exposure for a non-compliant sponsor more significant than the monthly support differential might initially suggest.

IV. When the Obligation Ends

The I-864 obligation terminates upon the occurrence of any one of five conditions enumerated in the statute[vii]. The sponsored immigrant's naturalization as a U.S. citizen is the most common exit, but naturalization for a spouse of a U.S. citizen requires a minimum of three years of continuous lawful permanent residence, and the timeline can be longer, especially in cases of divorce. Alternatively, the obligation ends if the immigrant accumulates forty qualifying quarters of Social Security coverage (roughly ten years of work), permanently departs the United States after losing lawful permanent resident status, obtains a new grant of lawful permanent residence in a separate proceeding, or dies. The sponsor's death also terminates the obligation.

What most people miss is that the list does not include divorce. The dissolution of the marriage has no legal effect on the I-864 obligation. A separation agreement, a divorce decree, prenuptial agreement, or a mutual waiver executed by the parties in a state court proceeding cannot extinguish a federal statutory obligation. Courts presented with this argument have rejected it consistently.

The Ninth Circuit expressly confirmed this understanding in Erler v. Erler, affirming that the sponsor’s obligation from the I-864 remained fully enforceable notwithstanding both a prenuptial agreement waiving alimony and the fact that the sponsored immigrant had been living with and financially supported by her adult son after the divorce[viii]. The sponsor who signed the I-864 remains bound until one of the five statutory conditions is satisfied, regardless of what the parties agreed to in their divorce.

V. Enforcement Mechanisms

The statute provides two parallel enforcement avenues. The first runs through government agencies. Any federal, state, or local agency that provides a means-tested public benefit to a sponsored immigrant may seek reimbursement from the sponsor for the cost of those benefits[ix]. This is a separate and distinct claim from anything the immigrant may bring directly.

The second avenue is private enforcement by the sponsored immigrant. The immigrant may file suit in federal district court or in state court and recover the monthly shortfall between actual income and the 125 percent threshold. A prevailing plaintiff may also recover attorney's fees[x].

The intersection of I-864 enforcement with divorce litigation has produced unsettled law in a number of jurisdictions. State family courts increasingly encounter I-864 claims raised alongside requests for alimony and property division. Whether a state court spousal support award should offset the federal I-864 obligation, or whether the two run independently, is a question courts have answered inconsistently[xi]. Practitioners handling divorce matters involving immigrant spouses should treat these as separate legal issues requiring separate analysis.

One further enforcement issue warrants attention for civil litigators: bankruptcy does not discharge the I-864 obligation. Courts have generally held that the support obligation under the I-864 functions analogously to a domestic support obligation and falls within the non-dischargeability provisions of the Bankruptcy Code[xii]. Therefore, a sponsor who files for bankruptcy relief cannot use it to escape the federal contract.

VI. Practical Guidance for Practitioners

The I-864's reach across multiple practice areas creates obligations for practitioners who may never set foot in an immigration court.

Immigration attorneys bear the primary responsibility for counseling sponsors before the affidavit is signed. That counseling should be thorough, documented, and treated as contract representation. A signed acknowledgment from the sponsor confirming that they understand the obligation's duration, its independence from the marriage, and its enforceability in federal court is a reasonable precaution. The same applies to joint sponsors, who frequently do not understand that they are assuming an independent federal obligation rather than endorsing a character reference. Form I-864A household member signatories[xiii] deserve the same level of disclosure.

Family law attorneys must ask at the outset of any divorce representation involving a foreign national spouse whether an I-864 was ever executed. If it was, the obligation must be factored into settlement negotiations. A divorce decree that purports to release the sponsor from the I-864 provides no legal protection and may give the client a false sense of security. The more defensible approach is to address the obligation transparently in the settlement, acknowledge that it survives the divorce, and account for it in the overall financial resolution.

Estate planning attorneys advising clients with immigrant spouses should also flag the I-864 as a contingent liability. While the obligation does not automatically bind the sponsor's estate, the issue is not fully settled, and failing to identify it during the planning process is an oversight that may later affect estate administration.

Even general civil litigators and criminal defense attorneys should be aware that an I-864 obligation can generate federal civil exposure that clients rarely volunteer.

VII. Conclusion

The I-864 Affidavit of Support is one of the most consequential documents in immigration practice, and one of the most underestimated outside of it. It is a federal contract that survives divorce, resists bankruptcy, and runs independently to two separate creditors: the United States government and the sponsored immigrant personally.

For practitioners across disciplines, the lesson is consistent: treat the I-864 as what it is from the moment of signing. It is not a formality, not a character reference, and not a problem for immigration attorneys alone. It is a binding federal obligation that follows the sponsor into the courtroom, the divorce proceeding, and the bankruptcy petition, and it will not release its hold until the statute says it may.