- Trump-Russia: Former aide Sam Nunberg defies Mueller inquiryBBC News
- Ex-aide Sam Nunberg won’t comply with subpoena, says Trump ‘may have done something’NBCNews.com
- AP NewsBreak: Miss. Sen. Thad Cochran resigning April 1WTOP
- Special counsel wants documents on Trump, numerous campaign associatesNBCNews.com
- What Is Sam Nunberg Doing?The Atlantic