My sister works in America and my mother is going to visit relatives. Can my son come with me when he is 5 years old? Can I get a visa? What is the procedure?

You can apply for a tourist visa. Don't say that you have relatives and friends in the United States during the interview, or you will have an immigration tendency, regardless of your status. There must be enough bank account deposits, fixed assets and fixed jobs.

Getting a notarial certificate proves that the relationship between your mother and children is very important. If you can't provide proof, then the US Customs won't let you enter the country.