Why does Obama continue to hire people who have Islamic or Marxist ideaologies?

He hired Hussain to be his deputy ociate as special envoy to the OIC(Organization of the Islamic Conference) one of the second largest inter-governmental organization after the United Nations charged with safeguarding and protecting "the interests of the muslim world"This was written about by Columnist Cal Thomas. It was also quoted by the Chicago Tribune that Hussain has participating in events connected with the Muslim Brotherhood, the world's most influential Islamic fundamentalist group. Doesn't that send red flags up for anyone working for our President and being paid by our taxpayers of the US? It concerns me.