Can I still file a petition for my mom even if I stop working?

I will assume that your mother is overseas and that you will be filing an I-130 petition and she will ultimately consular process at the American consulate or embassy in her home country. If that is your situation, financial support is not a concern at this stage. It only become relevant when the I-130 petition is approved and your mother begins consular processing. That would likely be over a year from now. If you stop working and have no employment by that time, a good option is to find a bona fide joint sponsor, e.g. related or friend, who can assist with the support obligation. If you have sufficient liquid assets, you may look on the poverty guidelines to see whether they will support your mother’s immigration. The amount of assets must be a multiple of 5 to cover multiple years of support. We note, however, that US consular officers sometimes have a more stringent view of the amount of financial support required in the case of parents. Due to the limitations of the Lawyers.com Forums, Alan Lee & Arthur Lee, Esqs.’ (the "Firm") participation in responding to questions posted herein does not constitute legal advice, nor legal representation of the person or entity posting a question. No Attorney/Client relationship is or shall be construed to be created hereby. The information provided herein by the Firm is general, and requires that the poster obtain specific legal advice from an attorney. The poster shall not rely upon the information provided herein as legal advice nor as the basis for making any decisions of legal consequence.