While promoting her new book, former White House aide Omarosa Manigault Newman has made some astonishing claims, including that staffers often sign non-disclosure agreements — which we now know is true. NDAs have long been used by private companies, but what role do they play in the public sector, if any? And are they enforceable?Want to support 1A? Give to your local public radio station and subscribe to our podcast. Have questions? Email the show at 1a@wamu.org and find us on Twitter @1a.