Barbara Bush memorial services

Cynthia Myers holds a rose as she waits for the visitation of former first lady Barbara Bush Friday, April 20, 2018, in Houston. Barbara Bush died on April 17, at the age of 92.

Housing and Urban Development Secretary Ben Carson arrives at St. Martin’s Episcopal Church for the visitation of former first lady Barbara Bush Friday, April 20, 2018, in Houston.

Lucy Orlando from Florida hold up a photo of Former President George H. W. Bush and his wife Barbara Bush as she waits for the visitation of the former first lady Friday, April 20, 2018, in Houston.

People line up as they wait for the visitation of former first lady Barbara Bush Friday, April 20, 2018, in Houston.

Sen. John Cornyn, R-Texas, arrives at St. Martin’s Episcopal Church with his wife Sandy Cornyn for the visitation of former first lady Barbara Bush Friday, April 20, 2018, in Houston.

Former President George H. W. Bush greets the mourners with his daughter Dorothy “Doro” Bush Koch during the visitation for former first lady Barbara Bush at St. Martin’s Episcopal Church Friday, April 20, 2018, in Houston. Barbara Bush died on April 17, at the age of 92.

Former U.S. first lady Barbara Bush lies in repose at St. Martin’s Episcopal Church Friday, April 20, 2018, in Houston, prior to the public visitation.

Former U.S. first lady Barbara Bush lies in repose at St. Martin’s Episcopal Church Friday, April 20, 2018, in Houston, prior to the public visitation.

The program for services is seen as former first lady Barbara Bush lies in repose at St. Martin’s Episcopal Church Friday, April 20, 2018, in Houston, prior to the public visitation.

Rhea Brown Lawson, director of the Houston Public Library, takes a photo in front of a memorial for former first lady Barbara Bush, Thursday, April 19, 2018, in Houston.

Deborah Blanton of Houston, signs a board honoring former first lady Barbara Bush, Thursday, April 19, 2018, in Houston.

People arrive at St. Martin’s Episcopal Church for the visitation of former first lady Barbara Bush Friday, April 20, 2018, in Houston. Barbara Bush died on April 17, at the age of 92. (AP Photo/Evan Vucci)  (Evan Vucci / AP)