This past week Rep. Michele Bachmann and four other Members of Congress have escalated her witch hunt, claiming the Muslim Brotherhood has infiltrated Congress and national security agencies. A prime target is Secretary of State Hillary Clinton’s close longtime aide Huma Abedein. Joe McCarthy, anyone? Salon.com political reporter Alex Seitz-Wald, who has led coverage of this story, joins us this week to expose what he thinks is really going on. Click here for extended interview and transcript.