What materials do the couple need to go to the United States at the same time to apply for a tourist visa?

if the husband and wife apply at the same time, bring a marriage certificate. \xd\ Information needed to apply for a US tourist visa: \xd\1. Valid passport: If the passport will expire within six months from the expected arrival date in the United States, or it is damaged, or there is no blank visa issuance page on the passport, please apply for a new passport before coming for an interview. \xd\2. Confirmation page of DS-16 form. Please indicate the Chinese name, telegraph code of Chinese name, Chinese home address, company name and address on it. Please print the form confirmation page vertically on A4 paper. Please bring the printed confirmation page of DS-16 form with you during the interview. Do not use the fax confirmation page. \xd\3. One photo: a 2-inch x2-inch (51 mm x51 mm) square color frontal photo taken within 6 months. Please see the photo requirements for details. Please stick the photo on the cover of your passport with scotch tape. \xd\4. Original receipt of visa application fee: You can pay the visa application fee of USD 16 at any branch of China CITIC Bank in China. Please stick the receipt on the lower half of the confirmation page with glue or adhesive tape. \xd\5. Passports containing previous visas to the United States, including passports that have expired. \xd\6. Evidence that can explain why you will definitely return to China: produce economic, social, family or other binding documents to help prove your intention to return to China after a short stay in the United States. Due to different personal circumstances, the evidence that the applicant should produce is also different. The following documents can help visa officers to evaluate whether they intend to return to China: household registration book, ID card, employment certificate, payroll that can objectively reflect monthly income, passbook with regular access records, etc. \xd\7. Invitation letter: If you are invited to visit a resident in the United States, the information listed will be helpful to your application: information of the inviter, purpose of your visit to the United States, and pre-arranged travel schedule. If you just travel to the United States, you don't need to show an invitation letter. \xd\8. Proof of funds: Proof of the ability to pay for the whole period of stay in the United States without work, such as payroll that objectively reflects the monthly income, passbook with regular access records, etc.