My host family told me they will not be my sponsors for a student visa because it’s a very big responsibility for them (like if somebody does something bad to me, or I have a car accident, they may be sued). They really don’t know what is meant by “sponsor may be sued if person in item 3 becomes a public charge after admission [into the country]”. It’s not the same rules for everybody and it’s easy for me because I want to change my J1 visa into student visa F1. So how I can find another sponsor (organization or some company who offer sponsorship) so can I stay legal?
This is a complex situation and documents of the J-1 visa status must be reviewed before any opinion is given. You need to consult an experienced attorney to guide you through the process.