Barbara Bush funeral

First lady Melania Trump arrives at St. Martin’s Episcopal Church for a funeral service for former first lady Barbara Bush on April 21, 2018, in Houston, Texas.

Former President Barack Obama and former first lady Michelle Obama greet first lady Melania Trump at St. Martin’s Episcopal Church for a funeral service for former first lady Barbara Bush on April 21, 2018, in Houston, Texas.

Hillary Clinton and former President Bill Clinton arrive at St. Martin’s Episcopal Church for a funeral service for former first lady Barbara Bush on April 21, 2018, in Houston, Texas.

Former Presidents George W. Bush, left, and George H.W. Bush arrive at St. Martin’s Episcopal Church for a funeral service for former first lady Barbara Bush on April 21, 2018, in Houston, Texas.

Former Florida Governor Jeb Bush comforts his father, former President George H.W. Bush, during a funeral service for his mother, former first lady Barbara Bush, at St. Martin’s Episcopal Church on April 21, 2018, in Houston, Texas.

Detailed view of a program during the funeral for former first lady Barbara Bush at St. Martins Episcopal Church April 21, 2018, in Houston, Texas.

The casket is brought into St. Martin’s Episcopal Church during the funeral for former first lady Barbara Bush on April 21, 2018, in Houston, Texas.

Mourners attend during a funeral service for former first lady Barbara Bush at St. Martin’s Episcopal Church, Saturday, April 21, 2018, in Houston.

Jenna Bush Hager speaks during a funeral service for her grandmother, former first lady Barbara Bush, at St. Martin’s Episcopal Church April 21, 2018, in Houston, Texas.

Jon Meacham speaks during a funeral service for former first lady Barbara Bush at St. Martin’s Episcopal Church, April 21, 2018, in Houston, Texas.

Susan Baker speaks during a funeral service for former first lady Barbara Bush at St. Martin’s Episcopal Church, April 21, 2018, in Houston, Texas.

Former Florida Governor Jeb Bush speaks during a funeral service for his mother, former first lady Barbara Bush at St. Martin’s Episcopal Church, April 21, 2018, in Houston, Texas.

Former President George W. Bush accompanied by former first lady Laura Bush follow as pallbearers carry the casket of former first lady Barbara Bush after a funeral service at St. Martin’s Episcopal Church on April 21, 2018, in Houston.

The remains of former first lady Barbara Bush are carried from St. Martin’s Episcopal Church following her funeral service on April 21, 2018, in Houston, Texas.

Former Presidents George H.W. Bush and George W. Bush accompanied by family members watch as pallbearers carry the casket of former first lady Barbara Bush after a funeral service Bush at St. Martin’s Episcopal Church on April 21, 2018, in Houston.

Former president George H.W. Bush and son, former president George W. Bush and family, leave St. Martin’s Episcopal Church following the funeral service for former first lady Barbara Bush on April 21, 2018 in Houston, Texas.

Onlookers take photos, video and wave as the motorcade carrying former first lady Barbara Bush’s body is seen along Memorial Drive in Houston, Texas, April 21, 2018.