Shariah law or Constitutional Democracy?

Frank Gaffney presents the case against the Obama's treatment of Muslims and Muslim states here.  It is a compelling indictment of the policies toward the WOT and for that matter Muslims in general of the current administration.  In fact, after reading this closely reasoned argument we should be posing the following question of every Muslim who wishes to enter this country:  Which do you believe is the best system for any state to govern under, Shariah law, or a secular constitutional democracy?  Should the person answer Shariah law, he would be denied entry to the US, for we would have identified this person as a radical Islamist and therefore either a terrorist or a terrorist sympathizer.  In either case a serious threat to the US.  We are at serious risk under the policies of this administration and the sooner we  make the necessary changes in the political environment the better.