CNN has cancelled the miniseries that it was going to produce on former first lady and Secretary of State Hillary Clinton after director Charles Ferguson withdrew from the project citing the difficulties he encountered finding trustworthy sources willing to talk.

"Nobody, and I mean nobody, was interested in helping me make this film," Ferguson said Monday on Huffington Post.

"Not Democrats, not Republicans, and certainly nobody who works with the Clintons, wants access to the Clintons, or dreams of a position in a Hillary Clinton administration," the filmmaker said.

"Charles Ferguson has informed us that he is not moving forward with his documentary about Hillary Clinton," CNN said in a statement.

"Charles is an Academy Award winning director who CNN Films was excited to be working with, but we understand and respect his decision," the network said.

CNN announced the project in July, and the news motivated the Republican National Committee to approve a resolution to withdraw from its association with the network to broadcast the presidential primary debates in 2016 if the production were not cancelled.

Clinton is one of the most-discussed potential candidates with an eye toward the 2016 presidential election, but she still has not confirmed that she intends to make another bid for the Democratic nomination.

"After approaching well over a hundred people, only two persons who had ever dealt with Mrs. Clinton would agree to an on-camera interview, and I suspected that even they would back out," Ferguson wrote on Huffington Post. EFE