By Manu Raju, Deirdre Walsh and Kevin Liptak

PHILADELPHIA (CNN) — House Speaker Paul Ryan told fellow Republicans Monday he will no longer defend GOP nominee Donald Trump and will instead use the next 29 days to focus on preserving his party’s hold on Congress.

“The speaker is going to spend the next month focused entirely on protecting our congressional majorities,” Ryan’s spokeswoman, AshLee Strong, said in a statement.

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In a conference call with members Monday morning, Ryan told members “you all need to do what’s best for you and your district,” according to someone who listened to the meeting.

“He will spend his entire energy making sure that Hillary Clinton does not get a blank check with a Democrat-controlled Congress,” said the person on the call — an implied acknowledgment that Donald Trump no longer appears able to capture the White House.

Ryan’s comments follow a Washington Post story out Friday, which revealed Trump made lewd and sexually aggressive comments in 2005 that were caught on a hot microphone. Trump apologized for those remarks over the weekend at Sunday’s debate, but also used his apologies to attack former President Bill Clinton.

Ryan did not say Monday whether he was reversing his endorsement of Trump, which was originally made in June. A spokesman for the House Speaker, Zack Roday, said there “no update in his position at this time” regarding his formal endorsement for the GOP nominee.

But he did make clear that he would no longer provide proactive support for his party’s presidential candidate. A source said Ryan would campaign in 17 states and 42 cities this month.

Afterward, a person who listened to the call said the reaction wasn’t entirely positive — and that Ryan’s comments angered some GOP members who believed the Speaker was essentially conceding the presidential contest to Clinton.

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The House Speaker’s actions in the aftermath of the lewd tape’s release have been closely monitored given Ryan’s initial reluctance to get behind Trump when he clinched the GOP nomination. Dozens of fellow Republican lawmakers withdrew their support for Trump, many insisting he should withdraw from the race entirely.

Trump and Ryan were originally set to appear together in Wisconsin on Saturday. But the House Speaker rescinded his invitation after the new comments came to light.

The-CNN-Wire ™ & © 2016 Cable News Network, Inc., a Time Warner Company. All rights reserved.

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