Do I need a certificate of innocence to apply for a US tourist visa?

No, American visas have two most important aspects. One is personal information, which values the records of going abroad, marital status, working status, real estate, automobile production, etc., and the other is face-to-face signing. You have to dispel all the doubts of the visa officer through face-to-face signing, but sometimes the visa officer is in a bad mood and may refuse to sign. This is the randomness of American visas, and we can't take it lightly when preparing materials.