A substantial part of my impression is based on his lengthy interview on CNN last night. YMMV. And I don't dispute your generalization, that all Muslims aim to institute sharia worldwide. I think the civilizations are not compatible, and mixing them will eventually result in the end of Western civilization. Khan may be an exception to the general rule. Not all muslims are devout, any more than all Catholics are.
Lol, nothing Mr. Con might have said concerning Sharia and the US Constitution since the DNC can be considered credible on this question. Only what he might have said before this controversy blew up.