On Saturday, Newsweek reported that the largest donor to the Clinton Foundation “may be in breach of US sanctions” on Iran due to his business dealings with the authoritarian regime in his capacity as the billionaire head of a Ukrainian pipe-making business. Since the article went public, the “big three” of ABC, CBS, and NBC have yet to even acknowledge this new development. Wednesday’s The Kelly File on FNC led with this story and Howard Kurtz noted how Newsweek itself buried the story which has generated little notice.

After briefly alluding to the Clinton Foundation scandal on Monday’s CBS This Morning, the CBS Evening News made no mention of the scandal or a damning new book on the subject from author Peter Schweizer on its Monday evening broadcast. Both ABC’s World News Tonight and NBC Nightly News did cover the story as well as Hillary Clinton’s response Monday afternoon in New Hampshire, but also parroted Clinton campaign talking points in responding to Schweizer’s allegations.

On Thursday morning, NBC’s Today ignored the latest revelations in the controversy surrounding the Clinton Foundation’s practice of accepting donations from countries with questionable human rights records. In contrast, CBS This Morning devoted a full 2 minutes and 32 seconds to the Clinton Foundation whereas ABC’s Good Morning America gave it just 60 seconds but bundled the story in with Chris Christie’s recent stop in New Hampshire in an attempt to downplay its significance.

The major English and Spanish broadcast networks ducked a new development in the Clinton Foundation scandal on Thursday night as a report surfaced that then-Secretary of State Hillary Clinton supported a U.S. trade deal with Colombia following donations to her family’s foundation from a Colombian oil company and its founder despite concerns of human rights violations and labor strikes.

On Monday night, ABC, CBS, and NBC combined to ignore the Hillary Clinton e-mail scandal with zero coverage of it in their evening newscasts. ABC and NBC also failied to mention the growing controversy surrounding the millions of dollars in donations to the Clinton Foundation from foreign governments and individuals. The CBS Evening News, however, stood out with a report that scrutinized the millions in donations from foreign individuals and spotlighted one member of Chinese parliament who gave $2 million to the organization in 2013.

During Monday’s NBC Nightly News, Andrea Mitchell hit Hillary Clinton hard over her email scandal and the millions the Clinton Foundation had received from foreign governments, but still found time to fawn over “a path-breaking speech” Clinton gave “in Beijing 20 years ago” on women’s rights and her “extraordinary” levels of support among Democratic voters.

After ABC and NBC failed to cover a front-page story in The Washington Post on Thursday morning about ethics questions surrounding the Clinton Foundation, their evening news counterparts continued the blackout by showing no interest in this story -- yet allocated nearly six minutes to efforts to catch two runaway llamas in Arizona.

Perhaps in response to the backlash against a planned miniseries on Hillary Clinton, Thursday's NBC Today aired an unusually critical story about the "chaos" at the Clinton Foundation and the possible negative political fallout for the would-be 2016 presidential contender. [Listen to the audio or watch the video after the jump]

White House correspondent Peter Alexander informed viewers: "As first reported by the New York Times, a 2011 review of the foundation raised concerns about infighting, bad management, and conflicts of interest. Observers say, echoing problems in Bill Clinton's White House and his wife's 2008 campaign."