Immigration lawyer needed.
3 attorney answers
You may qualify using your SS benefit and evidence of your assets. The real estate in China does not count. It may be easier to have your sister serve as a cosponsor based on her income alone.
You should look at the Form I-864, affidavit of support, and Form I-864P, poverty guidelines, to see how much income must be proven for the affidavit of support to be accepted by the government. The forms and instructions are free at www.uscis.gov .
Usually, assets can be substituted for current income if the assets are at least 5x the required current income.
You likely will find that real estate in China is probably not considered a countable asset as a requirement for a countable asset is that it be readily converted into cash within a year.
You will also find in the instructions that assets of the intending immigrant can be counted. Since your wife is the intending immigrant, assets in her name can be used.
You should check whether you were required to file US federal income tax returns. US citizens and legal permanent residents are required to file US federal income tax returns regardless of where they live. In your case, your income was likely low enough that you did not have to file. On another hand, there is a relative new requirement to file FBAR reports for persons with Foreign Bank and Financial Accounts. You should check whether you need to file those reports.
Your sister, should she decide to be a joint financial sponsor for your wife and stepson, would need to file her own affidavit of support.
You should review the specific facts with your attorney to find out your legal options.
Depending on the number of family members your total income from all sources should be more then 125% of poverty guidelines. You can add your assets and other savings as well.
If you want your sister as a co-sponsor, she will fill a separate affidavit of support as co-sponsor. Contact an attorney if you need any further help on this.
This is not a legal advise and it does NOT create any Attorney- Client relationship.