The announcement by the group, the Freedom of the Press Foundation
, is the latest contribution to a public relations tug of war between Mr. Snowden’s critics, who portray him as a criminal and a traitor, and his supporters, who say he is a whistle-blower and source for the news media in the tradition of Mr. Ellsberg.
The foundation’s board
already includes two of the journalists Mr. Snowden gave N.S.A. documents to, Glenn Greenwald and Laura Poitras. But the organization — which consulted with lawyers about whether adding Mr. Snowden to its board could jeopardize its nonprofit tax status — is trying to emphasize parallels between Mr. Snowden and Mr. Ellsberg.