A Fox News personality - whom President Donald Trump had urged his supporters to watch Saturday night - called on House Speaker Paul Ryan, R-Wis., to step down, saying he had done a disservice to Trump by failing to pass a high-profile health-care bill this week.

At the top of her show, Jeanine Pirro, host of "Justice With Judge Jeanine," delivered a scathing commentary on Ryan's performance in the days leading up to the decision to pull the House Republican bill to overhaul the Affordable Care Act.

"It failed within the first 70 days of President Donald Trump's administration, a president who made the replacement of Obamacare the hallmark of his campaign and then used valuable political capital to accomplish it," said Pirro, placing the blame squarely on Ryan.

Earlier Saturday, Trump took to Twitter to urge his followers to tune into Pirro's show, saying: " Watch @JudgeJeanine on @FoxNews tonight at 9:00 P.M."

In public statements since the bill's collapse, both Trump and Vice President Mike Pence have continued to support Ryan as speaker.

Earlier Saturday, White House press secretary Sean Spicer said Trump's tweet was motivated only by his being a fan of Pirro's show. Spicer did not immediately respond after the show had aired.

After delivering her commentary, Pirro said that there had been no coordination with Trump in her messaging.

"When he tweeted, 'Watch Judge Jeanine tonight,' he and I had absolutely no conversation, no discussion, no email, nothing," she said.

In her commentary, Pirro took aim squarely at Ryan for the bill's failure.

"Speaker Ryan, you come in with all your swagger and experience and you sell 'em a bill of goods, which ends up a complete and total failure, and you allow our president in his first 100 days to come out of the box like that, based on what?" she said. "Your legislative expertise, your knowledge of the arcane ins and outs of the bill writing-process? Your relationships? What? Your drinks at the Hay Adams with your pals?"