Could releasing the Nunes memo affect FISA warrant process?
CBS News senior national security analyst Fran Townsend, former homeland security adviser to President George W. Bush who also spent 13 years working in the Justice Department overseeing the unit that handled FISA warrants, joins "CBS This Morning" to discuss what the release of Rep. Devin Nunes' memo alleging improper surveillance of the Trump campaign would mean for the relationship between the FBI and the White House, and why it's important to protect the FISA warrant process.