The Customs and Border Protection (CBP) people do not hassle the parents or spouses of the U.S citizens too much as long as they are not entering to adjust to green card status within the United States. But if a CBP officer is either ill-informed or particularly unnecessarily harsh they could stop you and ask you to go back (which is unlikely).
A practical solution I would recommend to people is to do an immigration pre-clearance in Abu Dhabi (if you are traveling from India) that way if they are denied entry they just return from Abu Dhabi they don't have to come all the way to the United States.
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