You donu2019t need to u201caffordu201d anything (except the application fee) u2023 you only need to show that you have a certain level of current income in order to fill out the I-864 Affidavit of Support. If your own income is insufficient, you can find a u201cjoint sponsoru201d (it can be a friend or relative or anyone else who is a US citizen or permanent resident domiciled in the US) who has a sufficient level of income, who is willing to fill out an additional Affidavit of Support for your husbandu2019s immigration.