Do relatives need a spouse's signature to apply for American I- 130?

First, the United States spouse reunion immigration conditions:

1, American citizen, 1) In the United States, spouses can submit forms I- 130 and I-485 when applying. 2) Outside the United States: applicants need to fill out a document in the format of I- 130 for foreign relatives. After approval, it will be sent to the consulate for processing. The consulate or embassy will provide notification and processing information. 2. Green card holder, 1) In the United States: the applicant fills in the form I- 130 for foreign relatives, and after obtaining the visa number, please use the form I-485 to apply for status adjustment to permanent residency. 2) Outside the United States: After the applicant fills in a form I- 130, it will be sent to the consulate for processing, and the consulate or embassy will provide notification and processing information.

2. Conditions for reunion of American children: 1. American children: If the guarantor is an American citizen, to apply for an immigrant visa for your unmarried children under 2 1 year old, the children should also submit the I-485 form and the I- 130 form for applying for permanent residence or adjusting their status; If the guarantor is an American citizen, he can apply for an immigrant visa for his son or daughter, and he should submit the application form I- 130. When the immigrant visa number is available, the applicant's son or daughter will submit the I-845 form; If the guarantor is a legal permanent resident, form I- 130 should be submitted first. When the guarantor obtains the immigrant visa number, the child will submit the I-485 form for identity adjustment. 2. The child is not in the United States: the first thing to do is to submit the I- 130 form, which will be sent to the consulate for processing and obtaining a visa after approval. Form I-845 will be submitted if you apply in the United States, and form DS-260 will be submitted if you apply outside the United States.