Former Vice President Joe Biden Joe BidenPelosi slams Trump executive order on pre-existing conditions: It 'isn't worth the paper it's signed on' Hillicon Valley: Subpoenas for Facebook, Google and Twitter on the cards | Wray rebuffs mail-in voting conspiracies | Reps. raise mass surveillance concerns Fox News poll: Biden ahead of Trump in Nevada, Pennsylvania and Ohio MORE (D) will headline a GOP summit led by former Republican presidential nominee Mitt Romney, The Associated Press reported Monday.

Romney will interview Biden Friday evening at the invite-only weekend retreat in Deer Valley, Utah, a Biden spokesman and participants with knowledge of the summit’s schedule told the news wire.

High-profile Republicans including House Speaker Paul Ryan Paul Davis RyanKenosha will be a good bellwether in 2020 At indoor rally, Pence says election runs through Wisconsin Juan Williams: Breaking down the debates MORE (Wis.) and Sens. John McCain John Sidney McCainAnalysis: Biden victory, Democratic sweep would bring biggest boost to economy The Memo: Trump's strengths complicate election picture Mark Kelly: Arizona Senate race winner should be sworn in 'promptly' MORE (Ariz.) and Lindsey Graham Lindsey Olin GrahamSteele Dossier sub-source was subject of FBI counterintelligence probe Hillicon Valley: Subpoenas for Facebook, Google and Twitter on the cards | Wray rebuffs mail-in voting conspiracies | Reps. raise mass surveillance concerns Key Democrat opposes GOP Section 230 subpoena for Facebook, Twitter, Google MORE (S.C.) will also be speakers at the three-day event, which starts Thursday.

Romney tapped Ryan as his vice presidential running mate when he ran for office in 2012.

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Biden "is attending because he believes in bipartisanship and the importance of keeping good lines of communication open across the aisle," spokeswoman Kate Bedingfield told the AP.

Biden launched American Possibilities PAC, a new political action committee, last week, creating buzz about a possible 2020 presidential bid. The PAC will allow Biden to fundraise for candidates, further develop donor relationships and cover travel-related costs. In recent public appearances, Biden has said he's not running, but speculation about his future continues.

Romney regularly criticized then-Republican presidential candidate Donald Trump during the 2016 campaign, but he later worked to repair their relationship after the election, even being considered as a possible contender for secretary of State.

President Trump Donald John TrumpSteele Dossier sub-source was subject of FBI counterintelligence probe Pelosi slams Trump executive order on pre-existing conditions: It 'isn't worth the paper it's signed on' Trump 'no longer angry' at Romney because of Supreme Court stance MORE reportedly declined an invitation to attend Romney’s annual conference, which has featured other top Democrats in the past such as former chief Obama strategist David Axelrod.