Visiting relatives in the United States was refused a visa. Why?

2 14b tends to emigrate. The visa officer may doubt your sister's illness or why your parents don't go. The main reason is that there are too many visa frauds, which is really a drag.

You should ask for a second sign immediately, and provide some new materials, such as your sister's examination results, hospital bills, parents' medical records, and when you must return to China to prove that you must go and not stay.

By the way, if you are unmarried, you can't get a tourist visa.