US passport return plus red form

What you want to ask is what do you mean by returning your American passport and adding a red form? The return of a red stripe in an American passport means that the visa is refused. Because the white form obtained after the US visa is returned with a red stamp, the white form with a red stamp is a refusal to sign, so the US passport is returned with a red stamp as a refusal to sign. There are many reasons for refusing the visa, such as the applicant's immigration tendency, economic ability, language ability, fraud and so on. Countermeasures: find out the reasons for refusing the visa and make more preparations.