The funeral service for former President George H.W. Bush is bringing political opposites together.

Shortly ahead of the service for the 41st president at Washington National Cathedral, Chelsea Clinton, the daughter of former President Clinton and former Secretary of State Hillary ClintonHillary Diane Rodham ClintonDe Blasio pitches himself as tough New Yorker who can take on 'Don the con' From dive bars to steakhouses: How Iowa caucus staffers blow off steam Warren policy ideas show signs of paying off MORE, was seen in conversation with Vice President Pence.

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President TrumpDonald John TrumpTrump: 'I will not let Iran have nuclear weapons' Rocket attack hits Baghdad's Green Zone amid escalating tensions: reports Buttigieg on Trump tweets: 'I don't care' MORE's daughter Ivanka TrumpIvana (Ivanka) Marie TrumpHouse Intel to probe whether lawyers for Trump family interfered in investigation Trump Jr. subpoenaed after backing out of interviews: report Graham encourages Donald Trump Jr. to plead the Fifth MORE and her husband Jared KushnerJared Corey KushnerWhite House encouraging investment in Middle East as part of peace plan Bank staff highlighted 'suspicious activity' in Trump-, Kushner-controlled accounts: report Trump: 'Good chance' Dems give immigration 'win' after Pelosi called White House plan 'dead on arrival' MORE, both senior White House advisers, were eyed having what appeared to be a friendly chat with Senate Democratic Whip Dick DurbinRichard (Dick) Joseph DurbinLet's stop treating student borrowers like second-class citizens Trump's immigration push faces Capitol Hill buzzsaw Hillicon Valley: Trump takes flak for not joining anti-extremism pact | Phone carriers largely end sharing of location data | Huawei pushes back on ban | Florida lawmakers demand to learn counties hacked by Russians | Feds bust 0M cybercrime group MORE (Ill.).

The Wednesday service marks the first time since his inauguration that President Trump is face to face with political figures with whom he’s been critical, including former President Obama and Hillary Clinton, the 2016 Democratic presidential nominee, among others.

Obama was seen shaking hands with first lady Melania TrumpMelania TrumpAlec Baldwin leads Trump Oval Office sing-along on 'Saturday Night Live' The Hill's Morning Report — Presented by Pass USMCA Coalition — Trump: GOP has `clear contrast' with Dems on immigration The Hill's 12:30 Report: Alabama abortion bill revives national debate MORE as she and her husband entered the funeral service. The first lady also greeted former first lady Michelle ObamaMichelle LeVaughn Robinson ObamaMichelle Obama to headline Essence Festival Obama shares tribute to Michelle to celebrate Mother's Day 111-year-old woman gets free tickets to see Michelle Obama book tour MORE and former President Clinton.

President Trump shook hands with his predecessor and Michelle Obama as he sat down for the service.