我和太太出生在中国，目前都是加拿大公民。太太持TN一直在美国工作已经20多年。我以前也是TN, 但最近几年转为TD。儿子在美国出生，刚满21岁，准备帮我们申请依亲绿卡。有三个问题想请教8老师：
1.未婚儿子还在一所美国大学读书，几乎没有收入。目前我们同儿子还是一个家庭，住在一起（美国）。请问我太太的收入可以做为担保收入吗？如果可以，太太去年的税单可以作为证明吗？
-Yes. Because your spouse has worked in US for more than 10 years (40 quarters of SSA coverage), you and your spouse only need to file I-864W, respectively (you can use your spouse work credit for your I-864W by providing your marrige certificate). So, your kid does not need to file I-864.
Here is the USCIS website for I-864W filing:
Request for Exemption for Intending Immigrant's Affidavit of Support | USCIS
Your spouse needs to provide the copies of tax return and W2 of 2024, the employment verification letter from her employer with I-864W filing. She also needs to create an account online from SSA website and print out the list of her working history with the income of each year and provide it with I-864W filing.
You also need to file I-864W and provide the copies of your spouse's support documents above including your marriage certificate.
I-864W needs to be filed together with your I-485 and your spouse's I-485, respectively.
2.在递出I-130和I-485后等待期间，我太太还能以TN继续在美国工作，而我还能继续持有TD吗？
-Yes, but both of you had better not leave US until you get the green card. if you or your spouse want to leave US during I-485 pending, you or your spouse need to have approved advance parole, but your spouse cannot work using TN and must use EAD to work if she leaves US using advance parole. If you want to work before you get green card, you also can apply for EAD.
So, you and your spouse may apply for advance parole and EAD together with I-485 filing, but it will cost you a lot of money. EAD and advance parole applications are optional, so if you do not need it, you may not need to waste your money.
如果不可以，我们要转换为其他类别的签证吗？
3.所有表格可以一起同时递交吗？
-Yes.
