Trump has not always uttered kind words about the Bush family.
Their presidencies separated by a single generation, the nation's 41st and 45th presidents shared little in personality or worldview.
"If they come, which they have, to talk about an extension because of President Bush's passing, I would absolutely consider it and probably give it", Trump told reporters on his flight back from the G-20 summit in Argentina. Bush will lie in state in the Capitol starting Monday and a service will be held at the Washington National Cathedral later in the week.
McGrath also tweeted a photo of Sully, Bush's service dog, laying in front of the late President's casket on Sunday night with the caption, "Mission Complete".
Colorful socks were one of the former president's favorite fashion accessories.
U.S. Defense Chief Accuses Putin Of 'Duplicitous' Action On Missile Treaty
Trump abruptly canceled a planned meeting with Putin at the summit just two days before they were scheduled to sit down. Ambassador Nikki Haley in response to the actions.
Along with his son, George H.W. Bush will be eulogized by former Canadian Prime Minister Brian Mulroney, whose time in power overlapped with Bush, former US Sen. Many have also heralded Bush's 73-year marriage to his wife, Barbara Bush, who died months before her husband in April 2018.
Mr Bush's state funeral takes place at Washington's National Cathedral on Wednesday, before a private service at his longtime church in Houston on Thursday.
Historians believe Harry S. Truman's folksy aphorism about friends in Washington and dogs is probably apocryphal - the 33rd United States president didn't actually like dogs - but he would surely have fallen for Sully's charms. President Donald Trump, who ordered federal offices closed on Wednesday for a national day of mourning, is to attend with first lady Melania Trump. He joined the navy when he turned 18. He would go on to serve as ambassador to the United Nations and China, head of the Central Intelligence Agency and chair of the Republican National Committee before being elected to two terms as Ronald Reagan's vice-president.
The photo touched the hearts of many Twitter users. The two former presidents led fundraising campaigns in the aftermath of various disasters.
Bush visits a tent camp for natural disaster survivors on the outskirts of Islamabad, Pakistan, in 2006.