"Once again, journalists are in the unhappy predicament of trying to decide whether and how to cover false allegations raised by a candidate for president of the United States," Tapper said at the start his show, "The Lead."

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"The notion that this was a murder is a fiction born of delusion and untethered to reality and contradicted by evidence reviewed in at least six investigations, one of them by Ken Starr, hardly a Bill Clinton defender," Tapper said during the segment.

"To say otherwise is ridiculous, and, frankly, shameful," Tapper continued, reiterating that his scrutiny of Trump's comments wasn't "pro-Clinton" or "anti-Trump" but a "pro-truth position."

“I don’t bring [Foster] up because I don’t know enough to really discuss it,” Trump told the newspaper. “I will say there are people who continue to bring it up because they think it was absolutely a murder. I don’t do that because I don’t think it’s fair.”

Tapper went after Trump for having "lent credence to a bizarre and unfounded conspiracy theory," saying Trump was right to say it wasn't fair to bring up the conspiracies.

"You're right, it's not fair that you did that, certainly not to Mr. Foster's widow or their three children," Tapper said.

Police in Virginia concluded in 1993 that Foster, who had depression, shot himself. CNN noted that several independent investigations and media reports since then have reached the same conclusion.