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How FISA works and why it matters in the Russia probe

09:31

Ali Velshi and Stephanie Ruhle explain what the Foreign Intelligence Surveillance Act (FISA) is. NBC’s Ken Dilanian, Former Assistant Special Watergate Prosecutor Nick Akerman, and Former FBI special Agent Clint Watts review what we know so far in the Russia investigation and react to the House Intelligence Committee’s decision to release the Republican memo.