I'm not sure whether his positions "go far beyond these three questions of concern" or not.  His positions are ephemeral at best and may depend mostly upon the phase of the moon or the latest poll.  

What do you think about polygamy?  Current Federal law prohibits entry of an immigrant who follows polygamy.   (Think about Il Quran which permits up to five (5) wives for those Muslim immigrants.)  

 "8 USC 1182   (10)  Miscellaneous  
(A)  Practicing polygamists  

Any immigrant who is coming to the United States to practice polygamy is inadmissible."