In a modification for child support and visitation hearing, can my husband's ex ask him to be drug tested for no reason? Just to harrass him? She has no reason to suspect him of anything, he has no criminal record, pays child support (a lot) on time, is involved with their school, etc., a very responsible parent. She doesn't want him to be more involved with them and will probably do and say anything to discredit his character. What are his rights?