Seem to have a similar case (, I have a joint sponsor who alone meets the income requirement but files as married filing jointly) I was confused if I needed an I 864a. I thought their W2 would be enough
Let us know if they asked for the I-864a in Montreal.
I did not submitted joint sponsor's spouse i864A. I only submitted joint sponsor's i864m 3 year taxes, pay stubs and W2 for 2021 showing their individual income. I was DQ'd
