As far as I know, they’ll need a valid passport, B-2 visa application (Form DS-160), proof of ties to their home country, and financial documents. They can typically stay up to 6 months if approved.

They need a passport, completed DS-160 form, visa fee receipt, and proof of ties back home. If granted, a B-2 visa allows a stay of up to 6 months.

Your in-laws will need a valid passport, completed DS-160, proof of ties to home, and funds. They can stay up to 6 months if approved.