Former federal prosecutor Andrew McCarthy is alleging the Muslim Brotherhood is gaining undue influence with the U.S. government.
Speaking at the National Press Club, McCarthy cited what he calls substantial ties between Huma Abedin and the Brotherhood. Abedin is a top advisor to Secretary of State Hillary Clinton.
Five Republican House members recently sent a series of letters to the State Department about Abedin, including Rep. Michele Bachmann, R-Minn.
The lawmakers are urging an investigation of Abedin's possible links to the Islamist group. The move created a firestorm on Capitol Hill.
Democrats and even some Republicans accused Bachmann and her four colleagues of an anti-Muslim witch hunt.
Now McCarthy is defending the inquiries into Abedin's background as essential for national security.
"Rather than address those factual matters, matters that include connections not only to Muslim Brotherhood luminaries but to an al Qaeda financier, the response of the Obama administration, congressional Democrats, and their echo chamber in the Republican establishment, has been to attack and smear the messengers," McCarthy said.
McCarthy provided documentation showing what he called Abedin's extensive personal and family ties to the Muslim Brotherhood.
CBN News contacted the State Department for comment about McCarthy's charges but received no response.