A petitioner is always required to submit an affidavit of support with the required documentation.
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Your husband the petitioner must also file an I-864 affidavit of support even with a joint-sponsor. If he did not file taxes he files back taxes or must give adequate reasons that he wasn't required to file for example he did not meet the minimum threshold required to file. I would urge you to contact an experienced immigration attorney to guide you through this process.
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Your spouse will have to submit an affidavit of support and tax returns, if any.
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