My husband is an American and I want to apply for immigration.

Marriage visa pays attention to two points: true relationship+sufficient guarantee. Your husband's income is not enough, so you must find enough co-guarantors (preferably your husband's family), and the co-guarantors need to provide a three-year tax bill +W2+ employer's letter; Even so, your husband still has to submit the tax bill, because he is still your guarantor (the other is a co-guarantor). It doesn't matter if the amount on the tax bill is low, but it must be there. You should fill out the tax bill before the interview. Bring the statement of the co-organizer (why I am willing to vouch for you) with you during the interview. If he doesn't have a house in America, you must also provide proof of accommodation in America (whether he rents a house or his family wants you to live together); If your family is willing to provide you with accommodation, you need to write a statement. It doesn't depend on whether you apply for the United States or China, it depends on where your husband is. If he works in China or has a residence permit in China, he can apply in China, otherwise he can only apply from the United States. Judging from your situation, even coming to America will not be easy. Think it over. Good luck.