In the past, U.N. agencies have also sponsored "traveling seminars" for journalists so they write positive stories about U.N. projects. When conservative commentator Armstrong Williams was exposed for taking money from the Bush administration, his credibility was cast into doubt and news organizations expressed regrets for having had him on the air to comment on public policy issues. Williams was tainted by a conflict of interest that should have been revealed to the viewing audience. He was said to be a channel for Bush administration propaganda.