Trump, whose ascendancy to the head of the Republican Party saw him exchange vitriolic attacks with the establishment Bushes, has taken pains to demonstrate unity since the death of former president George H W Bush, aged 94, on Friday.
Ahead of Wednesday's state funeral -- where Trump will reportedly sit in the front row, but not deliver a eulogy -- the president tweeted he would visit the "wonderful Bush family" at the presidential guest residence Blair House across from the White House.
On a chilly afternoon, former president George W Bush, son of the deceased elder Bush, greeted Trump and the first lady, Melania, outside Blair House and took them inside for the private visit.
Trump's relations with the Republican establishment have been rocky since his insurgent campaign took him to the party's nomination and then a shock election win in 2016.
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