George W. Bush did not attend a White House event honoring his late mother, former first lady Barbara Bush, with a commemorative U.S. postal service stamp.

First lady Melania Trump honored one of her predecessors, the late first lady Barbara Bush, Thursday with the unveiling of a new US postage stamp at the White House Thursday, heralding Bush’s “forward-thinking vision” and 1990 call for a female president.

In the White House’s East Room, first lady Melania Trump and members of the Bush family gathered to unveil a U.S postage stamp bearing the portrait of former first lady Barbara Bush.